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Diffstat (limited to '2020')
| -rw-r--r-- | 2020/info/35.md | 234 | ||||
| -rw-r--r-- | 2020/meetings.org | 74 | ||||
| -rw-r--r-- | 2020/organizers-notebook.md | 12 | ||||
| -rw-r--r-- | 2020/organizers-notebook.org | 8 | ||||
| -rw-r--r-- | 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.vtt (renamed from 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt) | 296 | ||||
| -rw-r--r-- | 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.vtt (renamed from 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt) | 454 |
6 files changed, 681 insertions, 397 deletions
diff --git a/2020/info/35.md b/2020/info/35.md index 2901eee9..276d24aa 100644 --- a/2020/info/35.md +++ b/2020/info/35.md @@ -1,11 +1,13 @@ # WAVEing at Repetitive Repetitive Repetitive Music Zachary Kanfer -[[!template id=vid src="https://mirror.csclub.uwaterloo.ca/emacsconf/2020/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.webm"]] +[[!template id=vid src="https://mirror.csclub.uwaterloo.ca/emacsconf/2020/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.webm" size="122M" subtitles="/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.vtt" duration="9:44"]] [Download compressed .webm video (12.7M)](https://mirror.csclub.uwaterloo.ca/emacsconf/2020/smaller/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer--vp9-q56-video-original-audio.webm) +[View transcript](#transcript) -[[!template id=vid src="https://mirror.csclub.uwaterloo.ca/emacsconf/2020/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.webm" download="Download Q&A video"]] +[[!template id=vid src="https://mirror.csclub.uwaterloo.ca/emacsconf/2020/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.webm" download="Download Q&A video" size="89M" subtitles="/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.vtt" duration="6:18"]] [Download compressed Q&A .webm video (6.9M)](https://mirror.csclub.uwaterloo.ca/emacsconf/2020/smaller/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer--vp9-q56-video-original-audio.webm) +[View transcript for Q&A](#transcript-questions) During quarantine, I found myself spending time with an Android app. One of the features this app has is composing music that loops @@ -77,3 +79,231 @@ something worth looking into. # Notes Notes, references, and links at <https://zck.org/emacsconf2020> + + +<!-- transcript: 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.vtt --> + +<a name="transcript"></a> +# Transcript + +(00:04) Hi. I'm Zachary Kanfer, and this is waving at repetitive +repetitive repetitive music. Over quarantine, I've been bored, and I +found this Android app that has a bunch of mini-games, one of which +lets you compose music. And it works, but I want a little bit more +functionality than it offers, it's not very flexible. So, I thought +what if I made this, and what programs could I make this in that are +really flexible, are really customizable. Emacs. So, I looked into +it, and Emacs can play sounds, right? If you hit control g a couple of +times, you'll hear like an error tone, and it turns out that, that is +actually playing a WAVE file, but what's a WAVE file? + +(00:58) Well, it turns out that WAVE is a musical file format, or +really an annoying file format. So, data in it can be an unsigned +integer or a signed integer, it's not consistent, and it's +little-endian by default which is not the way I like to think about +it. Now, you can set a WAVE file to be big-endian, but if you do +that, Emacs can't play it. So, little-endian it is. There's also +duplicate data fields. Here are some fields that are fine, but then +there's a fourth field that's calculated based on multiplying two of +the other ones together, and then there's another data field that's… +you multiply those three ones together. So, it's just repetitive and +unnecessary, but you have to do it, or it's not a valid WAVE file. +Also, the last part of the file is described as data or as one website +I found said, the actual sound data. + +(02:04) Now, I don't know about you but when I see that, I think, what +is data? It turns out that sound is just a wave, and the data is just +a bunch of measurements of the height of that wave forming each +sample. So, this wave starts at 8 goes 9, 11, 13, 14, 15, and then +back down. If you just take those measurements, those numbers, put +them in a file, that's all your data is. + +(02:35) All right. Let's go to a demo of my program. So, this is what +zmusic looks like. The blue highlighted row is a single beat, there's +16 of them in this zmusic file, and each dash in the row is a single +note increasing…, starting really low all the way on the left and +going up as we go to the right. So, if we started playing, we won't +hear anything, but we'll see the highlighted beat is the currently +playing one, and we see that it loops. So, we can stop it, and now we +can click to add some notes. [Music] Even more than one note at the +same time works. [Music] And we can even add notes while it's +playing. [Music] + +(04:08) Okay, here are some other features that I didn't have time to +demo. So, you can save the music to a file, and this is interesting +because normally if there's no note in a beat, we just don't play that +beat, but if you're writing to a file you have to put something in, so +when it's playing it knows to not make a sound there. We can also use +different scales. We're using the minor pentatonic in the demo, but +you can use the major scale the minor scale or anything else. And +there's also keyboard support, but it sounds really bad, and I'll +explain why later. + +(04:48) Here are some things I learned while writing zmusic. Emacs +has buttons which are great as long as you don't put two of them right +next to each other. So, if you do that, mousing over one of them +highlights both of them. Now, that's because a button is really just +a series of characters with a text property to highlight them. So, +the fix is, you put another character between the two buttons, then +mousing over one of them only highlights the one you want, but even +this doesn't work really great for zmusic, because zmusic has a lot of +very small buttons in a row. So, it's really easy to accidentally put +your cursor over the space and click on that instead of the button. +So, I looked into unicode, and I found this character called a +zero-width space. So, we should be able to put that between buttons +and not be able to accidentally click on it. Unfortunately, a +zero-width space isn't actually zero width. If we put a hundred of +them between two other characters, you can see there's space there, +and I think what's happening is, the space is zero width but then +Emacs `put` uses one pixel between each pair of characters for the +cursor, so it's almost zero width. Some ways to play sound that don't +quite work! `play-sound` plays music, but it blocks, you can't do +things like, set other notes or even pause the music. And if you +throw it into async.el, it's silent, and I don't know why. So, the +solution I went with is taking that WAVE file, ran into the file +system, and then shelling out to a native executable to play the +sound. And that works fine as long as you only do it once, because if +you do it a couple of times at the same time like if you have a chord, +and you want to play three notes simultaneously, you get this weird +interference, and that's actually why the keyboard from before didn't +work. Also, side effects have this unexpected impact, when you saw +the demo it was running pretty smoothly, but if I just add one message +statement every beat for debugging purposes, I was getting lag and +jitter. + +(07:03) Here's the one thing I learned about music theory, music +theory is not easy to program. I was looking around to see what +concepts we can use to code the scales, to code the notes, the first +thing that I saw is scale degrees, and this when I looked into it, you +don't want to program in scale degrees. So, you see we have the +first, second, third, fourth, fifth, sixth, seventh but then it wraps +around. That octave up is also a first, and that's because both of +those notes are C, so that didn't work, and also you couldn't really +easily specify a flat or sharp. You could say a sharp third or you +know, a flat seventh or whatever, but then you kind of have these two +pieces of data that indicate the note, and I didn't love that. + +(07:55) So, I looked again, and I found intervals, and then I thought +about it, and you don't really want to program in intervals either. +It fixes some of the problems with scale degrees, you see, all the way +on the right you have an octave, so you wrap to 8, and you go 9, 10 +and that works. But you solve the same problem, you see you have a +major third but below we also have a minor third, so you saw that +problem of having two pieces of information. + +(08:20) So, I thought about it. Music is really frequencies. Like an A +is 440 hertz. So, at a low level that's what we're going to do, we're +just going to use frequencies. And then at the one level above that, +that's a little bit easier for humans to think about, we're going to +use semitones up from the root, which is kind of like scale degrees, +but instead of just counting each note as one more, we're going to say +how many semitones up it is. So, if there's a sharp between two +notes, that's going to be two steps up instead of just one. And then +we translate those two frequencies, so your A is 440 hertz, another +note might be 613.5, or whatever, and that's we use the low level to +play. + +(09:02) Some future work I have, I want to add some drums. I want to +make that keyboard actually work, and computers and synthesizers are +the only place you hear a pure sine wave like the one we have here, so +I want to add overtones or other octaves above it just to make it +sound a little bit more realistic. I've put notes references and the +source code up at <https://zck.org/emacsconf2020> [updated]. I'm one +of the organizers of EmacsNYC check that out. And if you take a look +or have any thoughts, I'd love to hear them, and thanks so much for +coming to my talk. + +<!-- /transcript --> + + +<!-- transcript: 2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.vtt --> + +<a name="transcript-questions"></a> +# Transcript: Q&A + +(00:09) Okay, yeah, so I'm Zachary Kanfer, let's go to the +questions. The first question, "Why do we go top to bottom for time +progression, and left to right for low to high?" Interesting, I +think…, so the initial thing I was copying, that initial app work this +way, and yeah, I mean, certainly traditional music, you know, on a +staff does go left to right like this. I mean, going top to bottom +does make it easier to add more beats without having to wrap, but +certainly that could be managed. Yeah, I had not really thought about +it, but it is definitely something worth looking into. + +(01:21) Two, "Will you play us another song?" Not now, I can make some +recordings of it, or certainly you can try it. I couldn't quite get +the microphone and the webcam and everything to work with the sound +playing now. So, I can record some. Also, I have put a link in the +Etherpad, <https://zck.org/emacsconf2020> [updated], where you can go +and get the source, and you can try it yourself. There's no +dependencies needed, so it's just all in Emacs. So, please, you know, +try it yourself. + +(01:57) "Any chance for an Emacs tracker or mod player?" I don't +really know what a mod player or tracker are, but I mean, I'm sure +that would be cool, maybe there's one on now, but I don't know. + +(02:11) My musical background. So, I've played various instruments +since about the third grade. Started recorder, play cello, I play +guitar now. But yeah, so just kind of random instruments, and I guess +kind of some of those things influence how I think about music. + +(02:33) "Are there any open source musical management sample libraries +that could be used?" Good question, I'm sure there are, I don't know +any of that integrate really well with Emacs. One of the cool things +that I liked about this is that there are no dependencies, you know, +you don't need any external program to generate the music. I mean, it +does shell out to to play, but that should be able to be done on any +operating system, as always, you have something that can play WAVE +files, but yeah, it is interesting to kind of try the different sounds +and different tones that you could get with different instruments. + +(03:14) Have I written any actual songs? Nothing super well put +together, I kind of just been playing around with this. It's kind of… +making this was one of those things where once I made it, I was like, +okay, now I can play with it, and I did a little bit, and was like, I +don't know if I feel like it right now. You know, which I've found +that to be the case with some things that I've implemented in Emacs +where it's… I make it, and then it's the kind of some of the desire to +use it all the time goes away, but I'm sure I'll circle back around at +some point especially kind of maybe once I add in different tones or +something. + +(03:54) I guess a similar question for pre-recorded sounds. Yeah, I +mean, if it's… part of what I did, what I wrote was a WAVE generation +library, so, if you kind of have the data, you could use those and +chop them up and take certain lengths of them and make a WAVE file, so +it's not plug and play right now, but you could certainly add those +notes to do it. + +(04:19) "Any MIDI mapping possibilities?" I haven't looked into it, +but I'm sure you definitely could output to MIDI which is another +benefit of having that multiple layers with the top layer is just, you +know, if the root note is this, we're just two semitones up or seven +semitones up or whatever it is. It should be relatively simple to +kind of switch out that layer underneath from WAVE to MIDI or other +things. + +(04:44) "What were some of the challenges with writing a special mode +for Emacs?" Interested in getting into this, not sure where to start. +This isn't the first mode I've written, so that's right…, certainly +that helps. I actually… I have a video that we recorded it as part of +EmacsNYC on making a major mode. That's basically starts from +nothing, and kind of builds up to an implementation of tic-tac-toe, +but so it kind of goes into printing things out and buttons and making +the mode. I mean, one of the best parts about Emacs is, because it's +so configurable and so introspectible, you can start pretty simply, +and just kind of ask Emacs about things, and then make one little +change. It's really… it's not that bad, so, I'll try to throw a link +up on that page I put up, or please email me for whoever asked this +question to get a link to that video, or just look at the source code +of this or any other major mode. Emacs makes it pretty easy to extend +major modes. + +(05:54) And I think that's the last question in the Etherpad, so, +thanks so much everybody for coming. (Amin: Thank you so much to +Zachary for your awesome talk, and for doing live questions. Thank +you.) Thank you. (Amin: Cheers.) + +<!-- /transcript --> diff --git a/2020/meetings.org b/2020/meetings.org index 2dbd8fd3..e1af50e9 100644 --- a/2020/meetings.org +++ b/2020/meetings.org @@ -25,10 +25,76 @@ * January 21, 2021 meeting -- Updates - - Sacha: - - Added transcript for 08 and edited subtitles for 21; only 03-questions and the opening/closing remarks remaining for day 1 - +- Updates: + - Sacha: one more talk left to transcribe for day 1, hooray! + Everything else has been edited. Next step for day 1 is to edit + the subtitles into transcripts and make them available. Also want + to check if ableplayer passes LibreJS, since that can give us + clickable transcripts; will include text transcript anyway for + non-JS. + - zaeph: Emacs Research Group wants to meet daily + - bandali: A little tired because of work; but good progress is + being made (yay!). Some progress done on the podcast. + - corwin: mental health improving; looking forward to getting back + to the swing of things :) +- Next EmacsConf: Calendar? + - We could stick to the same period as 2020's edition (i.e., + mid-November to mid-December) + - CFP? + - start earlier: accomidated anticipated higher + - First entire week of July might be a good time: it'd give us 4 + months before the actual conference + - Office hours + - Could be used for the outreach part of the CFP + - Could also keep people excited about EmacsConf + - On the format + - A regular timeslot where people can join + - We ask them whether we could use a recording of the session to + build some hype for the EmacsConf + - We can also have a private moment with them to address some of + the possible problems with their talk/topic + - Short-ish and regular works best, probably + - Let's work on this during February, and let's aim for a first + session in March + - if there are not presentations we can record and share we + could use clips from recent orginizer meetings; we could close + meetings with statements intended for this use. +- On having multiple tracks for the next EmacsConf, either + simultaneous or single-threaded + - Three tracks based on levels of mastery, e.g.: + - Beginners + - Pro-users + - Package developers + - Last year, we had de-facto tracks, or recurring topics like music, + academic research, SVG-graphics, games, typography/themes, + free-software philosophy, etc. + - We could use this info for the *outreach program*: 'We'd love to + have people come talk to us about music' +- Overhauling the graphics for the conferenc + - Posters? + - Scenes in OBS + - Custom dashboard.el ? +- Figuring out the roles for the next EmacsConf + - Fleshing out roles for everyone in advance (so that we're not + figuring it out one week prior) and along with this any private + comms to faciliate (e.g. iff voice-over and cuts are different + roles). +- Diversity discussions + - Taking inspiration from the GNU Kind Communication Guidelines +- On changing the time for the weekly meeting + - Corwin is happy to keep the same time because it'll motivate him + to wake up early on Saturdays + - We could have a monthly session which takes place on a weekday to + try to get more people on board (David O'Toole, David Bremner, + Karl Voit, etc.) + +- Ongoing projects for February: + - FSF Fiscal sponsorship (Leo) + - Office hours roadmap (Leo) + + + + * January 14, 2021 meeting - Updates: diff --git a/2020/organizers-notebook.md b/2020/organizers-notebook.md index b2edbf12..e2847847 100644 --- a/2020/organizers-notebook.md +++ b/2020/organizers-notebook.md @@ -46,8 +46,8 @@ I modified the `subed` package to work with VTT files. The modified version is a - [X] sachac <./info/16.md> <./subtitles/emacsconf-2020--16-org-roam-presentation-demonstration-and-whats-on-the-horizon--leo-vivier.vtt> - [X] sachac <./info/17.md> <./subtitles/emacsconf-2020--17-org-mode-and-org-roam-for-scholars-and-researchers--noorah-alhasan.vtt> - [X] sachac <./info/18.md> <./subtitles/emacsconf-2020--18-org-roam-technical-presentation--leo-vivier.vtt> -- [ ] sachac <./subtitles/emacsconf-2020--19-sharing-blogs-and-more-with-org-webring--brett-gilio-autogen.vtt> -- [ ] sachac <./subtitles/emacsconf-2020--20-omg-macros--corwin-brust-autogen.vtt> +- [X] sachac <./info/19.md> <./subtitles/emacsconf-2020--19-sharing-blogs-and-more-with-org-webring--brett-gilio-autogen.vtt> +- [X] sachac <./info/20.md> <./subtitles/emacsconf-2020--20-omg-macros--corwin-brust-autogen.vtt> - [ ] <./subtitles/emacsconf-2020--21-on-why-most-of-the-best-features-in-eev-look-like-5-minute-hacks--eduardo-ochs-autogen.vtt> - [ ] sachac <./subtitles/emacsconf-2020--22-powering-up-special-blocks--musa-al-hassy-autogen.vtt> - [ ] <./subtitles/emacsconf-2020--23-incremental-parsing-with-emacs-tree-sitter--questions--tuan-anh-nguyen-autogen.vtt> @@ -61,11 +61,11 @@ I modified the `subed` package to work with VTT files. The modified version is a - [ ] <./subtitles/emacsconf-2020--30-a-tour-of-vterm--questions--gabriele-bozzola-sbozzolo-autogen.vtt> - [ ] <./subtitles/emacsconf-2020--31-lakota-language-and-emacs--grant-shangreaux-autogen.vtt> - [ ] <./subtitles/emacsconf-2020--31-lakota-language-and-emacs--questions--grant-shangreaux-autogen.vtt> -- [ ] <./subtitles/emacsconf-2020--32-object-oriented-code-in-the-gnus-newsreader--eric-abrahamsen-autogen.vtt> -- [ ] <./subtitles/emacsconf-2020--33-maxima-a-computer-algebra-system-in-emacs--fermin.vtt> +- [ ] bhavin192 <./subtitles/emacsconf-2020--32-object-oriented-code-in-the-gnus-newsreader--eric-abrahamsen-autogen.vtt> +- [ ] bhavin192 <./subtitles/emacsconf-2020--33-maxima-a-computer-algebra-system-in-emacs--fermin.vtt> - [ ] bhavin192 <./subtitles/emacsconf-2020--34-extend-emacs-to-modern-gui-applications-with-eaf--matthew-zeng-autogen.vtt> -- [ ] bhavin192 <./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt> -- [ ] bhavin192 <./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt> +- [X] bhavin192 <./info/35.md> <./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt> +- [X] bhavin192 <./info/35.md> <./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt> - [X] bhavin192 <./info/38.md> <./subtitles/emacsconf-2020--38-emacs-development-update--john-wiegley.vtt> - [X] bhavin192 <./info/39.md> <./subtitles/emacsconf-2020--39-nongnu-elpa--questions--richard-stallman.vtt> - [X] bhavin192 <./info/39.md> <./subtitles/emacsconf-2020--39-nongnu-elpa--richard-stallman.vtt> diff --git a/2020/organizers-notebook.org b/2020/organizers-notebook.org index f3d68cdb..89792aab 100644 --- a/2020/organizers-notebook.org +++ b/2020/organizers-notebook.org @@ -61,11 +61,11 @@ I modified the =subed= package to work with VTT files. The modified version is a - [ ] [[./subtitles/emacsconf-2020--30-a-tour-of-vterm--questions--gabriele-bozzola-sbozzolo-autogen.vtt]] - [ ] [[./subtitles/emacsconf-2020--31-lakota-language-and-emacs--grant-shangreaux-autogen.vtt]] - [ ] [[./subtitles/emacsconf-2020--31-lakota-language-and-emacs--questions--grant-shangreaux-autogen.vtt]] -- [ ] [[./subtitles/emacsconf-2020--32-object-oriented-code-in-the-gnus-newsreader--eric-abrahamsen-autogen.vtt]] -- [ ] [[./subtitles/emacsconf-2020--33-maxima-a-computer-algebra-system-in-emacs--fermin.vtt]] +- [ ] bhavin192 [[./subtitles/emacsconf-2020--32-object-oriented-code-in-the-gnus-newsreader--eric-abrahamsen-autogen.vtt]] +- [ ] bhavin192 [[./subtitles/emacsconf-2020--33-maxima-a-computer-algebra-system-in-emacs--fermin.vtt]] - [ ] bhavin192 [[./subtitles/emacsconf-2020--34-extend-emacs-to-modern-gui-applications-with-eaf--matthew-zeng-autogen.vtt]] -- [ ] bhavin192 [[./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt]] -- [ ] bhavin192 [[./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt]] +- [X] bhavin192 [[./info/35.md]] [[./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt]] +- [X] bhavin192 [[./info/35.md]] [[./subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt]] - [X] bhavin192 [[./info/38.md]] [[./subtitles/emacsconf-2020--38-emacs-development-update--john-wiegley.vtt]] - [X] bhavin192 [[./info/39.md]] [[./subtitles/emacsconf-2020--39-nongnu-elpa--questions--richard-stallman.vtt]] - [X] bhavin192 [[./info/39.md]] [[./subtitles/emacsconf-2020--39-nongnu-elpa--richard-stallman.vtt]] diff --git a/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt b/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.vtt index 3c8dd20c..c60bd115 100644 --- a/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer-autogen.vtt +++ b/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--questions--zachary-kanfer.vtt @@ -1,286 +1,274 @@ WEBVTT 00:00:02.800 --> 00:00:09.200 -I can yes +I can, yes. 00:00:09.200 --> 00:00:13.120 -okay um yeah so I'm uh zachary canfer +Okay, yeah, so I'm Zachary Kanfer, 00:00:13.120 --> 00:00:14.920 let's go to the 00:00:14.920 --> 00:00:17.520 -questions uh the first question uh why +questions. The first question, "Why 00:00:17.520 --> 00:00:19.119 do we go top to bottom for time 00:00:19.119 --> 00:00:19.840 -progression +progression, 00:00:19.840 --> 00:00:23.920 -uh and left to right uh for low to high +and left to right for low to high?" 00:00:23.920 --> 00:00:27.279 -interesting I think uh so the initial +Interesting, I think…, so the initial 00:00:27.279 --> 00:00:30.000 -uh thing I was copying that initial app +thing I was copying, that initial app -00:00:30.000 --> 00:00:31.599 -work this way - -00:00:31.599 --> 00:00:35.280 -um and +00:00:30.000 --> 00:00:35.280 +work this way, and 00:00:35.280 --> 00:00:36.960 -yeah I mean certainly traditional music +yeah, I mean, certainly traditional music, 00:00:36.960 --> 00:00:38.960 -you know on a staff uh +you know, on a staff 00:00:38.960 --> 00:00:43.040 -does go left to right uh like this +does go left to right like this. 00:00:43.040 --> 00:00:46.000 -um I mean going top to bottom does make +I mean, going top to bottom does make 00:00:46.000 --> 00:00:47.440 it easier to add more beats without 00:00:47.440 --> 00:00:48.960 -having to wrap but certainly that could +having to wrap, but certainly that could 00:00:48.960 --> 00:00:49.920 -be managed +be managed. 00:00:49.920 --> 00:00:52.239 -um yeah I I had not really thought about +Yeah, I had not really thought about 00:00:52.239 --> 00:00:53.760 -it but it is definitely something worth +it, but it is definitely something worth 00:00:53.760 --> 00:00:55.199 -looking into +looking into. 00:00:55.199 --> 00:01:02.480 -uh yeah you are now unmuted +Yeah. 00:01:02.480 --> 00:01:05.680 -ah good point thank you let me go ahead +Ah, good point, thank you. Let me go ahead 00:01:05.680 --> 00:01:06.960 -and do that +and do that. 00:01:06.960 --> 00:01:14.240 -uh the entire screen +The entire screen… 00:01:14.240 --> 00:01:16.880 -okay so the screen share should be +Okay, so the screen share should be 00:01:16.880 --> 00:01:18.320 -starting +starting, 00:01:18.320 --> 00:01:21.439 -there we go cool all right uh +there we go. Cool, all right. 00:01:21.439 --> 00:01:24.880 -two will be placed on the song um not +Two, "Will you play us another song?" Not 00:01:24.880 --> 00:01:26.640 -now I can I can make some recordings of +now, I can make some recordings of 00:01:26.640 --> 00:01:28.080 -it or certainly you can try it +it, or certainly you can try it. 00:01:28.080 --> 00:01:30.720 -um I couldn't quite get the the +I couldn't quite get the 00:01:30.720 --> 00:01:33.119 microphone and the webcam and everything 00:01:33.119 --> 00:01:37.040 -to work with the sound playing now um so +to work with the sound playing now. So, 00:01:37.040 --> 00:01:40.079 -uh I can record some also please uh +I can record some. Also, please… 00:01:40.079 --> 00:01:43.520 -I put a link at the uh here in the uh +I have put a link at the… here in the 00:01:43.520 --> 00:01:46.640 -etherpad https://zck.me/emacsconf2020 +Etherpad, zck.org/emacsconf2020 [updated], 00:01:46.640 --> 00:01:48.479 -where you can go and get the source +where you can go and get the source, 00:01:48.479 --> 00:01:49.920 -and you can try it yourself uh there's +and you can try it yourself. There's 00:01:49.920 --> 00:01:51.920 -no dependencies needed so it's just all +no dependencies needed, so it's just all 00:01:51.920 --> 00:01:54.560 -in Emacs um so please you know try it +in Emacs. So, please, you know, try it 00:01:54.560 --> 00:01:57.040 -yourself +yourself. 00:01:57.040 --> 00:02:00.079 -any chance for an Emacs tracker or mod +"Any chance for an Emacs tracker or mod 00:02:00.079 --> 00:02:01.040 -player +player?" 00:02:01.040 --> 00:02:03.680 -um I don't really know what a mod player +I don't really know what a mod player 00:02:03.680 --> 00:02:04.479 or tracker 00:02:04.479 --> 00:02:08.000 -are but I mean I'm sure +are, but I mean, I'm sure 00:02:08.000 --> 00:02:09.679 -that would be cool uh maybe there's one +that would be cool, maybe there's one 00:02:09.679 --> 00:02:11.599 -on now but I don't know uh +on now, but I don't know. 00:02:11.599 --> 00:02:13.920 -my musical background so I've played +My musical background. So, I've played 00:02:13.920 --> 00:02:15.200 various instruments since about the 00:02:15.200 --> 00:02:15.840 -third grade +third grade. 00:02:15.840 --> 00:02:18.160 -uh started recorder uh play cello I play +Started recorder, play cello, I play 00:02:18.160 --> 00:02:19.520 -guitar now +guitar now. 00:02:19.520 --> 00:02:22.560 -um but yeah so just kind of random +But yeah, so just kind of random 00:02:22.560 --> 00:02:23.680 -instruments and +instruments, and 00:02:23.680 --> 00:02:26.959 -uh yeah I guess kind of some of those +I guess kind of some of those 00:02:26.959 --> 00:02:27.280 things 00:02:27.280 --> 00:02:30.480 -influence how I think about music um - -00:02:30.480 --> 00:02:33.519 -uh yeah um +influence how I think about music. 00:02:33.519 --> 00:02:35.360 -are there any open source musical +"Are there any open source musical 00:02:35.360 --> 00:02:36.640 management sample libraries that could 00:02:36.640 --> 00:02:37.840 -be used +be used?" 00:02:37.840 --> 00:02:41.200 -um good question I'm sure there are um I +Good question, I'm sure there are, I 00:02:41.200 --> 00:02:42.400 -don't know any that integrate really +don't know any of that integrate really 00:02:42.400 --> 00:02:43.360 -well with Emacs +well with Emacs. 00:02:43.360 --> 00:02:44.560 -one of the cool things that I liked +One of the cool things that I liked 00:02:44.560 --> 00:02:45.680 about this is that there are no 00:02:45.680 --> 00:02:47.440 -dependencies +dependencies, 00:02:47.440 --> 00:02:49.360 -you know you don't need any external +you know, you don't need any external 00:02:49.360 --> 00:02:50.800 program to 00:02:50.800 --> 00:02:53.040 -uh generate the music I mean it it does +generate the music. I mean, it does 00:02:53.040 --> 00:02:54.160 shell out to 00:02:54.160 --> 00:02:57.280 -to play um but that +to play, but that 00:02:57.280 --> 00:02:58.640 should be able to be done on any 00:02:58.640 --> 00:02:59.840 -operating system as always you have +operating system, as always, you have 00:02:59.840 --> 00:03:03.519 -something that can play wav files +something that can play WAVE files, 00:03:03.519 --> 00:03:05.599 -um but yeah it is interesting to kind of - -00:03:05.599 --> 00:03:06.879 -try the different +but yeah, it is interesting to kind of -00:03:06.879 --> 00:03:10.000 -uh different sounds and different +00:03:05.599 --> 00:03:10.000 +try the different sounds and different 00:03:10.000 --> 00:03:12.239 -tones uh that you could get with +tones that you could get with 00:03:12.239 --> 00:03:14.400 -different instruments +different instruments. 00:03:14.400 --> 00:03:16.959 -have I written any actual songs um +Have I written any actual songs? -00:03:16.959 --> 00:03:17.599 -nothing - -00:03:17.599 --> 00:03:21.040 -super uh +00:03:16.959 --> 00:03:21.040 +Nothing super 00:03:21.040 --> 00:03:23.680 -uh well put together just I kind of just +well put together, I kind of just 00:03:23.680 --> 00:03:25.519 -been playing around with this +been playing around with this. 00:03:25.519 --> 00:03:27.440 -it's kind of I making this was one of +It's kind of… making this was one of 00:03:27.440 --> 00:03:29.040 -those things where like once I made it I +those things where once I made it, I 00:03:29.040 --> 00:03:30.080 -was like okay +was like, okay, 00:03:30.080 --> 00:03:31.280 -now I can play with it and I did a +now I can play with it, and I did a 00:03:31.280 --> 00:03:32.720 -little bit and was like I don't know if +little bit, and was like, I don't know if 00:03:32.720 --> 00:03:33.920 -I feel like it right now +I feel like it right now. 00:03:33.920 --> 00:03:37.280 -you know which I've I've found that to +You know, which I've found that to 00:03:37.280 --> 00:03:38.720 be the case with some things that I've @@ -289,7 +277,7 @@ be the case with some things that I've implemented 00:03:39.599 --> 00:03:41.360 -in Emacs where it's I make it and then +in Emacs where it's… I make it, and then 00:03:41.360 --> 00:03:43.519 it's the kind of some of the desire to @@ -298,7 +286,7 @@ it's the kind of some of the desire to use it all the time 00:03:44.480 --> 00:03:46.879 -goes away but I'm sure I'll circle back +goes away, but I'm sure I'll circle back 00:03:46.879 --> 00:03:47.760 around @@ -310,121 +298,118 @@ at some point especially kind of maybe once I add in different tones or 00:03:52.400 --> 00:03:54.640 -something +something. 00:03:54.640 --> 00:03:56.400 I guess a similar question for 00:03:56.400 --> 00:03:57.840 -pre-recorded sounds yeah I mean +pre-recorded sounds. Yeah, I mean, 00:03:57.840 --> 00:04:01.120 -if it's part of what I did what I wrote +if it's… part of what I did, what I wrote 00:04:01.120 --> 00:04:02.080 was a 00:04:02.080 --> 00:04:04.720 -wave generation library so if you kind +WAVE generation library, so, if you kind 00:04:04.720 --> 00:04:06.720 -of have the data +of have the data, 00:04:06.720 --> 00:04:08.400 -you could use those and like chop them +you could use those and chop them 00:04:08.400 --> 00:04:10.159 up and take certain lengths of them 00:04:10.159 --> 00:04:13.360 -and make a wav file so it's not plug and +and make a WAVE file, so it's not plug and 00:04:13.360 --> 00:04:14.959 -play right now but you could certainly +play right now, but you could certainly 00:04:14.959 --> 00:04:19.120 -add those notes uh to do it - -00:04:19.120 --> 00:04:21.040 -um any knitting midi mapping +add those notes to do it. -00:04:21.040 --> 00:04:22.720 -possibilities um +00:04:19.120 --> 00:04:22.720 +"Any MIDI mapping possibilities?" 00:04:22.720 --> 00:04:24.560 -I haven't looked into it but I'm sure +I haven't looked into it, but I'm sure 00:04:24.560 --> 00:04:26.160 -you definitely could output to midi +you definitely could output to MIDI 00:04:26.160 --> 00:04:28.800 -um which is another benefit of having +which is another benefit of having 00:04:28.800 --> 00:04:30.400 that multiple layers with the top layer 00:04:30.400 --> 00:04:31.520 -is just like +is just, 00:04:31.520 --> 00:04:33.360 -um you know if the root note is this +you know, if the root note is this, 00:04:33.360 --> 00:04:35.120 we're just two semitones up or seven 00:04:35.120 --> 00:04:36.560 -semitones up or whatever it is +semitones up or whatever it is. 00:04:36.560 --> 00:04:38.160 -uh it should be relatively simple to +It should be relatively simple to 00:04:38.160 --> 00:04:40.720 kind of switch out that layer underneath 00:04:40.720 --> 00:04:44.479 -uh from wave to midi or other things +from WAVE to MIDI or other things. 00:04:44.479 --> 00:04:45.759 -what were some of the challenges with +"What were some of the challenges with 00:04:45.759 --> 00:04:47.520 -writing a special mode for Emacs +writing a special mode for Emacs?" 00:04:47.520 --> 00:04:49.759 -uh interested in getting into this not +Interested in getting into this, not 00:04:49.759 --> 00:04:51.040 -sure where to start +sure where to start. 00:04:51.040 --> 00:04:54.960 -um there uh yeah it so +There… yeah, it so… 00:04:54.960 --> 00:04:57.120 -this isn't the first mode I've written +this isn't the first mode I've written, 00:04:57.120 --> 00:04:58.320 -um so that's right +so that's right…, 00:04:58.320 --> 00:05:01.759 -certainly that helps um I actually +certainly that helps. I actually… 00:05:01.759 --> 00:05:05.600 -um I have a video that we recorded it +I have a video that we recorded it 00:05:05.600 --> 00:05:08.240 -as part of Emacs nyc on making a major +as part of EmacsNYC on making a major 00:05:08.240 --> 00:05:09.039 -mode +mode. 00:05:09.039 --> 00:05:10.720 -that's basically like starts from +That's basically starts from 00:05:10.720 --> 00:05:12.639 -nothing and kind of builds up to +nothing, and kind of builds up to 00:05:12.639 --> 00:05:15.680 -an implementation of tic-tac-toe um +an implementation of tic-tac-toe, 00:05:15.680 --> 00:05:17.039 but so it kind of goes into printing @@ -433,76 +418,73 @@ but so it kind of goes into printing things out and buttons and making the 00:05:19.600 --> 00:05:21.280 -mode +mode. 00:05:21.280 --> 00:05:22.800 -I mean one of the best parts about Emacs +I mean, one of the best parts about Emacs 00:05:22.800 --> 00:05:24.560 -is because it's so +is, because it's so 00:05:24.560 --> 00:05:26.479 -uh configurable and so introspectible +configurable and so introspectible, 00:05:26.479 --> 00:05:28.479 -you can start pretty simply +you can start pretty simply, 00:05:28.479 --> 00:05:30.320 -and just kind of asking max about things +and just kind of ask Emacs about things, 00:05:30.320 --> 00:05:32.320 and then make one little 00:05:32.320 --> 00:05:34.960 -change um it's really it's not that bad - -00:05:34.960 --> 00:05:36.479 -so uh +change. It's really… it's not that bad, -00:05:36.479 --> 00:05:39.039 -I'll try to throw a link up on that uh +00:05:34.960 --> 00:05:39.039 +so, I'll try to throw a link up on that 00:05:39.039 --> 00:05:40.560 -on on that page I put up or +page I put up, or 00:05:40.560 --> 00:05:42.000 please email me for whoever asked this 00:05:42.000 --> 00:05:44.479 -question uh to get a link to that video +question to get a link to that video, 00:05:44.479 --> 00:05:46.240 -um or just look at look at the source +or just look at the source 00:05:46.240 --> 00:05:47.919 -code of this or any other major mode +code of this or any other major mode. 00:05:47.919 --> 00:05:50.479 -um it it's pretty ems breaks it makes it +Emacs makes it 00:05:50.479 --> 00:05:52.880 -pretty easy to extend uh +pretty easy to extend 00:05:52.880 --> 00:05:56.479 -major modes and I think that's that's +major modes. And I think that's 00:05:56.479 --> 00:05:57.600 the last question 00:05:57.600 --> 00:06:00.240 -in the ether pad so uh thanks so much +in the Etherpad, so, thanks so much 00:06:00.240 --> 00:06:02.479 -everybody for coming +everybody for coming. -00:06:02.479 --> 00:06:06.720 -you are now unmuted uh thank you so much +00:06:04.033 --> 00:06:06.720 +(Amin: Thank you so much 00:06:06.720 --> 00:06:09.039 -to curry for your awesome talk +to Zachary for your awesome talk, 00:06:09.039 --> 00:06:12.960 -and for doing live questions +and for doing live questions. 00:06:12.960 --> 00:06:19.840 -thank you thank you cheers +Thank you.) Thank you. (Amin: Cheers.) diff --git a/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt b/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.vtt index 8fce6e98..57837210 100644 --- a/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer-autogen.vtt +++ b/2020/subtitles/emacsconf-2020--35-waveing-at-repetitive-repetitive-repetitive-music-zmusic--zachary-kanfer.vtt @@ -1,106 +1,109 @@ WEBVTT 00:00:04.080 --> 00:00:04.960 -hi +Hi. 00:00:04.960 --> 00:00:08.559 -i'm zachary canfer and this is waving +I'm Zachary Kanfer, and this is waving 00:00:08.559 --> 00:00:11.679 -and repetitive repetitive repetitive +at repetitive repetitive repetitive 00:00:11.679 --> 00:00:15.759 -music over quarantine i've been bored +music. Over quarantine, I've been bored, 00:00:15.759 --> 00:00:18.400 -and i found this android app that has a +and I found this Android app that has a 00:00:18.400 --> 00:00:19.680 -bunch of mini games +bunch of mini-games, 00:00:19.680 --> 00:00:23.519 -one of which lets you compose music +one of which lets you compose music. 00:00:23.519 --> 00:00:26.640 -and it works but i +And it works, but I 00:00:26.640 --> 00:00:28.160 want a little bit more functionality 00:00:28.160 --> 00:00:30.720 -than it offers it's not very flexible +than it offers, it's not very flexible. 00:00:30.720 --> 00:00:33.760 -so i thought what if i made this +So, I thought what if I made this, 00:00:33.760 --> 00:00:35.360 -what and what programs could i make this +and what programs could I make this 00:00:35.360 --> 00:00:37.760 -in that are really flexible are really +in that are really flexible, are really 00:00:37.760 --> 00:00:40.320 -customizable +customizable. 00:00:40.320 --> 00:00:44.239 -emacs so i looked into it and +Emacs. So, I looked into it, and 00:00:44.239 --> 00:00:46.320 -emacs can play sounds right if you hit +Emacs can play sounds, right? If you hit 00:00:46.320 --> 00:00:47.840 -control g a couple times you'll hear +control g a couple of times, you'll hear 00:00:47.840 --> 00:00:49.760 -like an error tone +like an error tone, 00:00:49.760 --> 00:00:51.360 -and it turns out that that is actually +and it turns out that, that is actually 00:00:51.360 --> 00:00:54.559 -playing a wave file +playing a WAVE file, 00:00:54.559 --> 00:00:58.960 -but what's a wave file +but what's a WAVE file? 00:00:58.960 --> 00:01:01.920 -well it turns out that wave is a musical +Well, it turns out that WAVE is a musical 00:01:01.920 --> 00:01:03.440 -file format +file format, 00:01:03.440 --> 00:01:07.840 -or really an annoying file format +or really an annoying file format. 00:01:07.840 --> 00:01:12.080 -so data in it can be an unsigned integer +So, data in it can be an unsigned integer 00:01:12.080 --> 00:01:15.360 -or a science integer it's not consistent +or a signed integer, it's not consistent, 00:01:15.360 --> 00:01:17.920 -and it's little ending by default which +and it's little-endian by default which 00:01:17.920 --> 00:01:20.320 -is not the way i like to think about it +is not the way I like to think about it. -00:01:20.320 --> 00:01:23.200 -now you can set a wav file to be big +00:01:20.320 --> 00:01:21.600 +Now, you can -00:01:23.200 --> 00:01:25.200 -endian but if you do that +00:01:21.600 --> 00:01:23.733 +set a WAVE file to be big-endian, -00:01:25.200 --> 00:01:28.640 -emacs can't play it so little ending it +00:01:23.733 --> 00:01:25.200 +but if you do that, -00:01:28.640 --> 00:01:30.479 -is +00:01:25.200 --> 00:01:26.600 +Emacs can't play it. + +00:01:26.600 --> 00:01:30.479 +So, little-endian it is. 00:01:30.479 --> 00:01:33.520 -there's also duplicate data fields +There's also duplicate data fields. 00:01:33.520 --> 00:01:35.360 -here are some fields that are fine but +Here are some fields that are fine, but 00:01:35.360 --> 00:01:36.960 then there's a fourth field that's @@ -109,46 +112,46 @@ then there's a fourth field that's calculated based on multiplying two of 00:01:38.960 --> 00:01:40.799 -the other ones together +the other ones together, 00:01:40.799 --> 00:01:42.399 and then there's another data field 00:01:42.399 --> 00:01:44.880 -that's you multiply those three ones +that's… you multiply those three ones 00:01:44.880 --> 00:01:48.479 -together so it's just repetitive and +together. So, it's just repetitive and 00:01:48.479 --> 00:01:50.479 -unnecessary but you have to do it or +unnecessary, but you have to do it, or 00:01:50.479 --> 00:01:54.159 -it's not a valid wave file +it's not a valid WAVE file. 00:01:54.159 --> 00:01:56.479 -also the last part of the file is +Also, the last part of the file is 00:01:56.479 --> 00:01:58.159 described as data 00:01:58.159 --> 00:02:01.759 -or as one website i found said +or as one website I found said, 00:02:01.759 --> 00:02:05.200 -the actual sound data now +the actual sound data. Now, 00:02:05.200 --> 00:02:06.960 -i don't know about you but when i see +I don't know about you but when I see 00:02:06.960 --> 00:02:09.039 -that i think +that, I think, 00:02:09.039 --> 00:02:12.080 -what is a data it turns out +what is data? It turns out 00:02:12.080 --> 00:02:15.120 -that sound is just a wave and +that sound is just a wave, and 00:02:15.120 --> 00:02:17.760 the data is just a bunch of measurements @@ -157,43 +160,43 @@ the data is just a bunch of measurements of the height of that wave forming each 00:02:19.120 --> 00:02:20.400 -sample +sample. 00:02:20.400 --> 00:02:24.480 -so this wave starts at 8 goes 9 11 13 +So, this wave starts at 8 goes 9, 11, 13, 00:02:24.480 --> 00:02:27.840 -14 15 and then back down and if you just +14, 15, and then back down. If you just 00:02:27.840 --> 00:02:29.520 -take those measurements those numbers +take those measurements, those numbers, -00:02:29.520 --> 00:02:32.080 -put them in a file that's all your data +00:02:29.520 --> 00:02:30.700 +put them in a file, -00:02:32.080 --> 00:02:35.200 -is +00:02:30.700 --> 00:02:35.200 +that's all your data is. 00:02:35.200 --> 00:02:36.560 -all right let's go to a demo of my +All right. Let's go to a demo of my 00:02:36.560 --> 00:02:38.959 -program +program. 00:02:38.959 --> 00:02:41.920 -so this is what z music looks like the +So, this is what zmusic looks like. The 00:02:41.920 --> 00:02:44.080 -blue highlighted row is a single beat +blue highlighted row is a single beat, 00:02:44.080 --> 00:02:48.319 -there's 16 of them in this z music file +there's 16 of them in this zmusic file, 00:02:48.319 --> 00:02:52.000 and each dash in the row 00:02:52.000 --> 00:02:55.040 -is a single note increasing starting +is a single note increasing…, starting 00:02:55.040 --> 00:02:57.920 really low all the way on the left and @@ -202,109 +205,112 @@ really low all the way on the left and going up 00:02:58.959 --> 00:03:01.680 -as we go to the right so if we started +as we go to the right. So, if we started 00:03:01.680 --> 00:03:02.400 -playing +playing, 00:03:02.400 --> 00:03:05.040 -we won't hear anything but we'll see the +we won't hear anything, but we'll see the 00:03:05.040 --> 00:03:06.400 highlighted beat is the currently 00:03:06.400 --> 00:03:07.680 -playing one +playing one, + +00:03:07.680 --> 00:03:09.833 +and we see that it loops. -00:03:07.680 --> 00:03:11.120 -and we see that it loops so we can stop +00:03:09.833 --> 00:03:12.720 +So, we can stop it, -00:03:11.120 --> 00:03:12.720 -it +00:03:12.720 --> 00:03:20.633 +and now we can click to add some notes. -00:03:12.720 --> 00:03:30.879 -and now we can click to add some notes +00:03:20.633 --> 00:03:30.879 +[Music] 00:03:30.879 --> 00:03:33.120 -even more than one note at the same time +Even more than one note at the same time -00:03:33.120 --> 00:03:43.920 -works +00:03:33.120 --> 00:03:37.333 +works. -00:03:43.920 --> 00:03:56.160 -and we can even add notes while it's +00:03:37.333 --> 00:03:43.920 +[Music] -00:03:56.160 --> 00:03:58.840 -[Applause] +00:03:43.920 --> 00:03:45.567 +And we can even add notes -00:03:58.840 --> 00:04:00.150 -playing +00:03:45.567 --> 00:03:56.160 +while it's playing. -00:04:00.150 --> 00:04:08.239 -[Applause] +00:03:56.160 --> 00:04:08.239 +[Music] 00:04:08.239 --> 00:04:10.480 -okay here are some other features that i +Okay, here are some other features that I 00:04:10.480 --> 00:04:12.959 -didn't have time to demo +didn't have time to demo. 00:04:12.959 --> 00:04:16.000 -so you can save the music to a file and +So, you can save the music to a file, and 00:04:16.000 --> 00:04:18.239 this is interesting because normally 00:04:18.239 --> 00:04:20.880 -if there's no note in a beat we just +if there's no note in a beat, we just 00:04:20.880 --> 00:04:22.800 -don't play that beat +don't play that beat, 00:04:22.800 --> 00:04:24.639 but if you're writing to a file you have 00:04:24.639 --> 00:04:25.919 -to put something in +to put something in, 00:04:25.919 --> 00:04:27.840 so when it's playing it knows to not 00:04:27.840 --> 00:04:31.360 -make a sound there +make a sound there. -00:04:31.360 --> 00:04:34.479 -we can also use different scales we're +00:04:31.360 --> 00:04:33.800 +We can also use different scales. -00:04:34.479 --> 00:04:36.240 -using the minor pentatonic +00:04:33.800 --> 00:04:36.240 +We're using the minor pentatonic 00:04:36.240 --> 00:04:38.080 -in the demo but you can use the major +in the demo, but you can use the major 00:04:38.080 --> 00:04:39.680 scale the minor scale -00:04:39.680 --> 00:04:42.400 -or anything else and there's also +00:04:39.680 --> 00:04:40.967 +or anything else. -00:04:42.400 --> 00:04:44.400 -keyboard support but it sounds really +00:04:40.967 --> 00:04:43.367 +And there's also keyboard support, -00:04:44.400 --> 00:04:45.199 -bad +00:04:43.367 --> 00:04:45.199 +but it sounds really bad, 00:04:45.199 --> 00:04:48.240 -and i'll explain why later +and I'll explain why later. 00:04:48.240 --> 00:04:50.800 -here are some things i learned while +Here are some things I learned while 00:04:50.800 --> 00:04:53.520 -writing z music +writing zmusic. 00:04:53.520 --> 00:04:56.479 -emacs has buttons which are great as +Emacs has buttons which are great as 00:04:56.479 --> 00:04:58.240 long @@ -313,412 +319,412 @@ long as you don't put two of them right next 00:04:59.919 --> 00:05:02.160 -to each other so if you do that +to each other. So, if you do that, 00:05:02.160 --> 00:05:04.400 mousing over one of them highlights both 00:05:04.400 --> 00:05:06.160 -of them +of them. 00:05:06.160 --> 00:05:07.919 -now that's because a button is really +Now, that's because a button is really 00:05:07.919 --> 00:05:10.080 just a series of characters with a text 00:05:10.080 --> 00:05:11.680 -property to highlight them +property to highlight them. 00:05:11.680 --> 00:05:15.120 -so the fix is you put another character +So, the fix is, you put another character 00:05:15.120 --> 00:05:16.479 -between the two buttons +between the two buttons, 00:05:16.479 --> 00:05:18.080 then mousing over one of them only 00:05:18.080 --> 00:05:19.759 -highlights the one you want +highlights the one you want, 00:05:19.759 --> 00:05:21.600 but even this doesn't work really great 00:05:21.600 --> 00:05:22.800 -for z music +for zmusic, 00:05:22.800 --> 00:05:25.440 -because the music has a lot of very +because zmusic has a lot of very 00:05:25.440 --> 00:05:27.120 -small buttons in a row +small buttons in a row. 00:05:27.120 --> 00:05:29.840 -so it's really easy to accidentally put +So, it's really easy to accidentally put 00:05:29.840 --> 00:05:31.600 your cursor over the space 00:05:31.600 --> 00:05:34.639 -and click on that instead of the button +and click on that instead of the button. 00:05:34.639 --> 00:05:37.120 -so i looked into unicode and i found +So, I looked into unicode, and I found 00:05:37.120 --> 00:05:38.160 this character called 00:05:38.160 --> 00:05:40.800 -a zero width space so we should be able +a zero-width space. So, we should be able 00:05:40.800 --> 00:05:42.560 to put that between buttons and not be 00:05:42.560 --> 00:05:45.120 -able to accidentally click on it +able to accidentally click on it. 00:05:45.120 --> 00:05:46.960 -unfortunately a zeroth space isn't +Unfortunately, a zero-width space isn't 00:05:46.960 --> 00:05:50.080 -actually zero width +actually zero width. 00:05:50.080 --> 00:05:51.680 -if we put a hundred of them between two +If we put a hundred of them between two 00:05:51.680 --> 00:05:53.759 -other characters you can see there's +other characters, you can see there's 00:05:53.759 --> 00:05:54.880 -space there +space there, 00:05:54.880 --> 00:05:56.240 -and i think what's happening is the +and I think what's happening is, the 00:05:56.240 --> 00:05:58.160 space is zero width 00:05:58.160 --> 00:06:01.360 -but then emax put uses one pixel between +but then Emacs `put` uses one pixel between 00:06:01.360 --> 00:06:02.800 each pair of characters 00:06:02.800 --> 00:06:08.080 -for the cursor so it's almost zero width +for the cursor, so it's almost zero width. 00:06:08.080 --> 00:06:09.919 -some ways to play sound that don't quite +Some ways to play sound that don't quite 00:06:09.919 --> 00:06:12.960 -work play sound plays music +work! `play-sound` plays music, 00:06:12.960 --> 00:06:14.800 -but it blocks you can't do things like +but it blocks, you can't do things like, 00:06:14.800 --> 00:06:17.280 -set other notes or even pause the music +set other notes or even pause the music. 00:06:17.280 --> 00:06:19.600 -and if you throw it into async.el it's +And if you throw it into async.el, it's 00:06:19.600 --> 00:06:21.600 -silent and i don't know why +silent, and I don't know why. 00:06:21.600 --> 00:06:24.479 -so the solution i went with is taking +So, the solution I went with is taking 00:06:24.479 --> 00:06:25.440 -that wav file +that WAVE file, 00:06:25.440 --> 00:06:27.039 -ran into the file system and then +ran into the file system, and then 00:06:27.039 --> 00:06:29.199 shelling out to a native executable to 00:06:29.199 --> 00:06:30.639 -play the sound +play the sound. 00:06:30.639 --> 00:06:32.880 -and that works fine as long as you only +And that works fine as long as you only 00:06:32.880 --> 00:06:34.240 -do it once +do it once, 00:06:34.240 --> 00:06:36.080 -because if you do it a couple times at +because if you do it a couple of times at 00:06:36.080 --> 00:06:37.600 -the same time like if you have a chord +the same time like if you have a chord, 00:06:37.600 --> 00:06:38.639 and you want to play three notes 00:06:38.639 --> 00:06:40.000 -simultaneously +simultaneously, 00:06:40.000 --> 00:06:42.319 -you get this weird interference and +you get this weird interference, and 00:06:42.319 --> 00:06:43.680 that's actually why the keyboard from 00:06:43.680 --> 00:06:46.319 -before didn't work +before didn't work. 00:06:46.319 --> 00:06:49.199 -also side effects have this unexpected +Also, side effects have this unexpected 00:06:49.199 --> 00:06:50.240 -impact +impact, 00:06:50.240 --> 00:06:53.039 -uh when you saw the demo it was running +when you saw the demo it was running 00:06:53.039 --> 00:06:55.120 -pretty smoothly +pretty smoothly, 00:06:55.120 --> 00:06:57.680 -but if i just add one message statement +but if I just add one message statement 00:06:57.680 --> 00:06:58.479 every beat for 00:06:58.479 --> 00:07:00.960 -debugging purposes i was getting lag and +debugging purposes, I was getting lag and 00:07:00.960 --> 00:07:03.759 -jitter +jitter. 00:07:03.759 --> 00:07:05.440 -here's the one thing i learned about +Here's the one thing I learned about 00:07:05.440 --> 00:07:08.319 -music theory music theory +music theory, music theory 00:07:08.319 --> 00:07:11.599 -is not easy to program +is not easy to program. 00:07:11.599 --> 00:07:12.880 -i was looking around to see what +I was looking around to see what 00:07:12.880 --> 00:07:15.440 -concepts we can use to code the scales +concepts we can use to code the scales, -00:07:15.440 --> 00:07:16.080 -to code the +00:07:15.440 --> 00:07:16.933 +to code the notes, -00:07:16.080 --> 00:07:18.160 -notes the first thing that i saw is +00:07:16.933 --> 00:07:18.160 +the first thing that I saw is 00:07:18.160 --> 00:07:20.240 -scale degrees +scale degrees, 00:07:20.240 --> 00:07:23.360 -and this when i looked into it you don't +and this when I looked into it, you don't 00:07:23.360 --> 00:07:26.319 -want to program in scale degrees +want to program in scale degrees. 00:07:26.319 --> 00:07:28.240 -so you see we have the first second +So, you see we have the first, second, 00:07:28.240 --> 00:07:29.759 -third fourth fifth sixth seventh but +third, fourth, fifth, sixth, seventh but 00:07:29.759 --> 00:07:32.080 -then it wraps around that octave up +then it wraps around. That octave up 00:07:32.080 --> 00:07:33.919 -is also a first and that's because both +is also a first, and that's because both 00:07:33.919 --> 00:07:36.000 -of those notes are c +of those notes are C, 00:07:36.000 --> 00:07:38.479 -uh so that didn't work and also you +so that didn't work, and also you 00:07:38.479 --> 00:07:39.759 couldn't really easily 00:07:39.759 --> 00:07:43.599 -specify a flat or sharp you could say +specify a flat or sharp. You could say 00:07:43.599 --> 00:07:47.680 -a sharp third uh or +a sharp third or 00:07:47.680 --> 00:07:50.879 -you know a flat seventh or whatever but +you know, a flat seventh or whatever, but 00:07:50.879 --> 00:07:52.319 then you kind of have these two pieces 00:07:52.319 --> 00:07:53.759 -of data that indicate the note and i +of data that indicate the note, and I 00:07:53.759 --> 00:07:55.840 -didn't i didn't love that +didn't love that. 00:07:55.840 --> 00:07:57.440 -so i looked a little looked again and i +So, I looked again, and I 00:07:57.440 --> 00:07:59.280 -found intervals +found intervals, 00:07:59.280 --> 00:08:01.120 -and then i thought about it and you +and then I thought about it, and you 00:08:01.120 --> 00:08:02.080 don't really want to program in 00:08:02.080 --> 00:08:03.440 -intervals either +intervals either. 00:08:03.440 --> 00:08:05.520 -it fixes some of the problems with scale +It fixes some of the problems with scale 00:08:05.520 --> 00:08:07.039 -degrees you see +degrees, you see, 00:08:07.039 --> 00:08:08.319 all the way on the right you have an 00:08:08.319 --> 00:08:10.319 -octave so you wrap to 8 and you +octave, so you wrap to 8, and you 00:08:10.319 --> 00:08:13.039 -go 9 10 and that works but you solve the +go 9, 10 and that works. But you solve the 00:08:13.039 --> 00:08:14.319 -same problem you see you have a major +same problem, you see you have a major 00:08:14.319 --> 00:08:16.400 third but below we also have a minor 00:08:16.400 --> 00:08:18.080 -third so you saw that problem of having +third, so you saw that problem of having 00:08:18.080 --> 00:08:20.160 -two pieces of information +two pieces of information. 00:08:20.160 --> 00:08:23.360 -uh so i thought about it music's really +So, I thought about it. Music is really 00:08:23.360 --> 00:08:27.120 -frequencies like an a is 440 hertz +frequencies. Like an A is 440 hertz. 00:08:27.120 --> 00:08:28.400 -so at a low level that's what we're +So, at a low level that's what we're 00:08:28.400 --> 00:08:29.360 -going to do we're just going to use +going to do, we're just going to use 00:08:29.360 --> 00:08:30.560 -frequencies +frequencies. 00:08:30.560 --> 00:08:32.800 -and then at the one level above that uh +And then at the one level above that, 00:08:32.800 --> 00:08:34.159 that's a little bit easier for humans to 00:08:34.159 --> 00:08:35.360 -think about +think about, 00:08:35.360 --> 00:08:37.039 we're going to use semitones up from the 00:08:37.039 --> 00:08:39.519 -root which is kind of like scale degrees +root, which is kind of like scale degrees, 00:08:39.519 --> 00:08:40.959 but instead of just counting each note 00:08:40.959 --> 00:08:42.880 -as one more we're going to say how many +as one more, we're going to say how many 00:08:42.880 --> 00:08:44.560 -semitones up it is +semitones up it is. 00:08:44.560 --> 00:08:47.200 -so if there's a sharp between two notes +So, if there's a sharp between two notes, 00:08:47.200 --> 00:08:48.480 that's going to be two steps up instead 00:08:48.480 --> 00:08:50.000 -of just one +of just one. 00:08:50.000 --> 00:08:51.279 -and then we translate those two +And then we translate those two 00:08:51.279 --> 00:08:54.160 -frequencies so your a is 440 hertz +frequencies, so your A is 440 hertz, 00:08:54.160 --> 00:08:56.920 another note might be 00:08:56.920 --> 00:08:58.480 -613.5 +613.5, 00:08:58.480 --> 00:09:00.720 -or whatever and we that's we use the low +or whatever, and that's we use the low 00:09:00.720 --> 00:09:02.959 -level to play +level to play. 00:09:02.959 --> 00:09:05.200 -some future work i have i want to add +Some future work I have, I want to add 00:09:05.200 --> 00:09:06.480 -some drums +some drums. 00:09:06.480 --> 00:09:08.240 -i want to make that keyboard actually +I want to make that keyboard actually 00:09:08.240 --> 00:09:09.680 -work uh +work, 00:09:09.680 --> 00:09:12.399 -and uh computers and synthesizers are +and computers and synthesizers are 00:09:12.399 --> 00:09:14.320 the only place you hear a pure sine wave 00:09:14.320 --> 00:09:16.000 -like the one we have here +like the one we have here, 00:09:16.000 --> 00:09:17.680 -so i want to add overtones or other +so I want to add overtones or other 00:09:17.680 --> 00:09:19.440 -octaves above it uh just to make it +octaves above it just to make it 00:09:19.440 --> 00:09:23.120 -sound a little bit more realistic +sound a little bit more realistic. 00:09:23.120 --> 00:09:25.360 -i've put notes references in the source +I've put notes references and the source -00:09:25.360 --> 00:09:28.480 -code up at zck dot me slash emacs conf +00:09:25.360 --> 00:09:26.000 +code up -00:09:28.480 --> 00:09:31.839 -2020 i'm one of the organizers of emacs +00:09:26.000 --> 00:09:30.067 +at zck.org/emacsconf2020 [updated]. -00:09:31.839 --> 00:09:33.040 -nyc +00:09:30.067 --> 00:09:33.040 +I'm one of the organizers of EmacsNYC 00:09:33.040 --> 00:09:36.080 -check that out and if you take a look +check that out. And if you take a look 00:09:36.080 --> 00:09:38.240 -or have any thoughts i'd love to hear +or have any thoughts, I'd love to hear 00:09:38.240 --> 00:09:39.839 -them and +them, and 00:09:39.839 --> 00:09:46.160 -thanks so much for coming to my talk +thanks so much for coming to my talk. |