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ToneJSAudioBufferToWav.js

include('http://eerojohannes.com/js/Tone.min.js')
include('http://eerojohannes.com/js/FileSaver.min.js')

//tone.js offline rendering example

	//load the buffer for use in the convolver
		var buffer = new Tone.Buffer("https://googlechrome.github.io/web-audio-samples/samples/audio/impulse-responses/chorus-feedback.wav");
		Tone.loaded().then(function(){
			return Tone.Offline(function(Transport){
				var reverb = new Tone.Convolver(buffer).toMaster();
				reverb.wet.value = 0.2;
				var pannerA = new Tone.Panner(-1).connect(reverb);
				var synthA = new Tone.Synth({
					"envelope" : {
						"attack" : 0.01,
						"decay" : 5,
						"sustain" : 0
					},
					"oscillator" : {
						"type" : "sawtooth4"
					}
				}).connect(pannerA);
				var seqA = new Tone.Sequence(function(time, note){
					synthA.triggerAttack(note, time)
				}, ["A4", "G4", "G#4", "F#4", "E4"], "8n").start(0);
				seqA.loop = false;
				var pannerB = new Tone.Panner(1).connect(reverb);
				var synthB = new Tone.Synth({
					"envelope" : {
						"attack" : 0.001,
						"decay" : 3,
						"sustain" : 0
					},
					"oscillator" : {
						"type" : "square8"
					}
				}).connect(pannerB);
				var seqB = new Tone.Sequence(function(time, note){
					synthB.triggerAttack(note, time)
				}, ["G#4", "A4", "G4", "F4", "C4"], "8n").start("16n");
				seqB.loop = false;
				var bass = new Tone.MonoSynth({
					"envelope" : {
						"attack" : 0.01,
						"decay" : 3,
						"sustain" : 0.1
					},
				}).toMaster()
				var bassSeq = new Tone.Sequence(function(time, note){
					bass.triggerAttackRelease(note, "1n", time)
				}, ["C2", "C2", "F1", "F1"], "4n").start(0);
				bassSeq.loop = false;
				Transport.bpm.value = 150;
				Transport.start();
			}, 7)
		}).then(function(buffer){
			//set the buffer once it's rendered

			console.log(buffer)

//end tone.js offline example

//buffer to wav code by kevin cennis using recorderjs
        
        // assuming a var named `buffer` exists and is an AudioBuffer instance
        // start a new worker 
        // we can't use Recorder directly, since it doesn't support what we're trying to do
        var worker = new Worker('http://eerojohannes.com/js/recorderWorker.js');
        
        // initialize the new worker
        worker.postMessage({
          command: 'init',
          config: {sampleRate: 44100}
        });
        
        // callback for `exportWAV`
        worker.onmessage = function( e ) {
          var blob = e.data;
          // this is would be your WAV blob
          console.log(e)
          saveAs(blob, "thing.wav");
        };
        
        // send the channel data from our buffer to the worker
        worker.postMessage({
          command: 'record',
          buffer: [
            buffer.getChannelData(0), 
            buffer.getChannelData(1)
          ]
        });
        
        // ask the worker for a WAV
        worker.postMessage({
          command: 'exportWAV',
          type: 'audio/wav'
        });

		})