cwilso/vocoder

Naive WebAudio Vocoder

Web Audio Vocoder

This application (also shown at I/O 2012) implements a 28-band (actually variable number of bands) vocoder - a "robotic voice" processor. It's a pretty complex audio processing demo. It also supports live input, and has several controls exposed; it supports MIDI control over the pitch and other parameters.

Check it out, feel free to submit issues or requests, fork, submit pull requests, etc.

The live app is at https://cwilso.github.io/Vocoder/.

-Chris

vocoder's Issues

Implement stacked, controllable chords for carrier

via Chris Rogers:

I was thinking that if you had 3 stacked oscillators then you could play musical "triads" and assign the keyboard keys to change chords and modulate to different keys. You could have a simple JSON structure with the triad semitone (or "cents") values... I think this would add a lot since you could play chord progressions rather simply this way. Obviously MIDI will be way better, but in the meantime...

Enable live control over "debug band".

Need a rights-free modulator signal to play with.

Add stacking oscillators as a carrier source

Should provide ability to stack controllable Oscillator nodes as the carrier source.

Add a high-pass-filtered band for noise only (for plosives/fricatives)

http://webaudiodemos.appspot.com/Vocoder/ is borken

Site pukes with copious cross-domain errors. Probably stale server config.

Vocoder demo

Hi Chris
I was watching an audacity tutorial recently and it mentioned your vocoder which would be ideal for a project I am working on.

Does the link to your vocoder still work, please?

https://webaudiodemos.appspot.com/Vocoder/index.html#

I was hoping to perhaps load a vocal into it somehow (or record one) but it won’t respond.
I am on Windows 10.

Need a popup settings box - control MIDI ports, et al.

Tweakable waveshaper curve

Add getUserMedia() as a modulator input

Demo of vocoder no lorger working

Failed to load resource: the server responded with a status of 404 ()
main.js:377 Uncaught TypeError: Cannot read property 'addEventListener' of undefined
    at init (main.js:377)
init @ main.js:377

Do we have research paper or journal attached with this?

Do we have research paper or journal attached with this?
I am interested to know the internals as going through the code and understanding it is time consuming.

redesign interface to enable easier switching between sample and synthesized carrier sources

Enable live control over analyzers' sources

404 In references to MIDI lib

Vocoder/index.html

Line 30 in acccdb5

<script src='//cwilso.github.io/WebMIDIAPIShim/lib/WebMIDIAPI.js'></script>

references the /lib/ path instead of what seems to be the valid path with /build/ in the url.

Add noise generator as a stackable carrier source

How would I use this via the command line?

vocoder

Help understanding the Waveshaper

Hello cwilso,

I'm learning going through your code and was wondering if you could provide a bit more documentation for the waveshaper ?

For instance: what the function "e4" does? Is that some sort of distortion algorithm ? Where did it come from?

A more personal question: for generateColortouchCurve and generateMirrorCurve, is there a tool / website you were using to visualise and/or hear the curves ?

Thanks for such nice resource, i'm working on a experiment with vocoder will let you know when i get it going ( :