- From: Phil Burk <philburk@mobileer.com>
- Date: Mon, 06 Feb 2012 18:19:05 -0800
- To: public-audio@w3.org
I have begun doing some experiments with the Web Audio API described here: <https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html> In general, I really like the API. It will be great to have a flexible set of synthesis modules available from JavaScript. I was impressed with the inclusion of FFT support, convolution, occlusion, etc. I was also very happy to see that timestamps are supported. That is so crucial. I am now trying to do some "Hello World" type examples and have hit a few snags. Perhaps someone could help me. My first test was to generate a tone using an oscillator. <http://www.softsynth.com/webaudio/tone.php> But I could not find the oscillator class. I could use a looping buffer but that would be difficult to use for FM or multi-octave sweeps. It is also difficult to control aliasing with a looped wavetable, even with multi-point interpolation. Luckily I was able to use a JavaScriptNode to implement a simple sine oscillator. It would be nice to have an AudioOscillator class with sine, sawtooth, square, pulse and impulse. The oscillator should accept frequency values that can go negative for extreme modulation. An AudioNoise class would also be very useful with white noise, pink noise and red noise generation. Stochastic synthesis is very handy for wind, explosions, percussive sounds, etc. Thanks, Phil Burk
Received on Tuesday, 7 February 2012 02:22:59 UTC