Audio Channel routing

[ghost]

I'd like to be able to route audio coming from Audiolet to the audio channels of the OS. I see that Audiolet has internal channels and routing capabilities, is there a way to hook into these channels using something like Soundflower?

I am working on a project that includes remixing streaming internet audio. I've hit a stumbling block at being able to access independent audio streams. Browsers send audio exclusively on channels 1 and 2 AFAIK.

Any help/ideas greatly appreciated.

[oampo]

Hm, I think this is currently difficult - as you said the audio API implementations only allow you to send audio on channels 1 and 2. As far as I can tell multichannel output is a planned feature for the Web Audio API, but the implementations are stereo-only at the moment.

One possibility would be to create a node which chucks the audio data through a WebSocket to an application running outside the browser, which then passes that to the audio output. I have no idea whether WebSockets are up to passing that much data with any sort of reliability though, and I can only imagine that results will be flaky at best.

If I think of any better ideas I'll post them up here, but I have a feeling that this will be a matter of waiting for the implementations to work with multiple channels (at which point it will be simple to route Audiolet data to whichever channel you want).

[ghost]

Just an update: it appears that multi-channel functionality has just been exposed!
http://www.html5audio.org/2013/03/surround-audio-comes-to-the-web.html

https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AudioDestinationNode

[oampo]

Sorry for the late reply - I've been super busy and my brain skipped over this. Awesome news though. I've just had a quick glance through all the code concerning this and as far as I can tell it should work automagically with multi-channel output. All you need to do it give a different numberOfChannels argument when you create the Audiolet object, and set up your routing accordingly. I don't really have a good way of testing this at the moment, so YMMV. If you try it out I'd be interested to know how it goes.

[jenyckee]

Can someone make a gist of how to make this work? It looks like a very desirable feature to me to be able to route your audio into external applications like a DAW.

Imagine I have this:

context = new AudioContext;
oscillator = context.createOscillator();
oscillator.frequency.value = 200;

oscillator.connect(context.destination);

oscillator.start(0);

how could I route this into soundflower and use the audio output directly somewhere outside the browser?