web-audio-api

I'm using the Google Cloud API for Speech-to-text, with a NodeJS back-end. The app needs to be able to listen for voice commands, and transmit them to the back-end as a buffer. For this, I need to send the buffer of the preceding audio when silence is detected. Any help would be appreciated. Including the js code below if (!navigator.getUserMedia) navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia; if (navigator.getUserMedia) { navigator.getUserMedia({audio: true}, success, function (e) { alert('Error

I have an audio buffer rendered using webkitOfflineAudioContext . Now, I wish to export it into a WAV file. How do I do it? I tried using recorder.js but couldn't figure out how to use it. Here's my code: http://jsfiddle.net/GBQV8/ . Here's a gist that should help: https://gist.github.com/kevincennis/9754325 . I haven't actually tested this, so there might be a stupid typo or something, but the basic approach will work (I've done it before). Essentially, you're going to use the web worker from Recorder.js directly so that you can process one big AudioBuffer all in one shot, rather than

Realtime moving Waveform I'm currently playing with Web Audio API and made a spectrum using canvas. function animate(){ var a=new Uint8Array(analyser.frequencyBinCount), y=new Uint8Array(analyser.frequencyBinCount),b,c,d; analyser.getByteTimeDomainData(y); analyser.getByteFrequencyData(a); b=c=a.length; d=w/c; ctx.clearRect(0,0,w,h); while(b--){ var bh=a[b]+1; ctx.fillStyle='hsla('+(b/c*240)+','+(y[b]/255*100|0)+'%,50%,1)'; ctx.fillRect(1*b,h-bh,1,bh); ctx.fillRect(1*b,y[b],1,1); } animation=webkitRequestAnimationFrame(animate); } Mini question: is there a way to not write 2 times new