opus-recorder VS noisecraft

In the end, I went with this library for now: https://github.com/chris-rudmin/opus-recorder

There are issues reported with the latest iOS, though.

// size of one wav in ms var PACKAGESIZE = 175; // offset proportion for delay from recders ( if .5 recoder2 starts at the midlle of recorder1) var OFFSETRATIO = 0.99; var BRIDGERATIO = 0.05; // audio streamer implementation using https://github.com/chris-rudmin/opus-recorder to record audio data and convert to real 16bit pcm mono wav file // sending wav to flask server using post via ajax blob post function screenLogger(text, data) { log.innerHTML += "\n" + text + " " + (data || ''); // console.log(text); } var recorder = new Recorder({ monitorGain: 0, recordingGain: 1, numberOfChannels: 1, wavBitDepth: 16, encoderPath: "../static/dist/waveWorker.min.js" }); // function startRecording(){recorder.start();console.log("started recording");} document.getElementById("startRecording").addEventListener("click", function(){recorder.start();console.log("start");}); //#region recorder1 recorder.onstart = function(){ screenLogger('Recorder is started'); setTimeout(function(){recorder.stop();},PACKAGESIZE); }; recorder.onstop = function(){ screenLogger('Recorder is stopped'); recorder.start(); }; recorder.onstreamerror = function(e){ screenLogger('Error encountered: ' + e.message ); }; recorder.ondataavailable = function( typedArray ){ console.log(recorder.encodedSamplePosition); console.log("data available"); var dataBlob = new Blob( [typedArray], { type: 'audio/wav' } ); var form = new FormData(); form.append('file', dataBlob, "fileName"); form.append('title', "fileName2"); $.ajax({ type: 'POST', url: 'http://127.0.0.1:5000/send', crossDomain: true, data: form, cache: false, processData: false, contentType: false }).done(function(data,status) { console.log(data,status); screenLogger("result:",data); }); var fileName = new Date().toISOString() + ".wav"; var url = URL.createObjectURL( dataBlob ); var audio = document.createElement('audio'); audio.controls = true; audio.src = url; var link = document.createElement('a'); link.href = url; link.download = fileName; link.innerHTML = link.download; var li = document.createElement('li'); li.appendChild(link); li.appendChild(audio); recordingslist.appendChild(li); }; //#endregion //#region recoder2 var recorder2 = new Recorder({ monitorGain: 0, recordingGain: 1, numberOfChannels: 1, wavBitDepth: 16, encoderPath: "../static/dist/waveWorker.min.js" }); recorder2.onstart = function(){ screenLogger('Recorder 2 is started'); setTimeout(function(){recorder2.stop();},PACKAGESIZE*BRIDGERATIO); }; recorder2.onstop = function(){ screenLogger('Recorder 2 is stopped'); recorder2.start(); }; recorder2.onstreamerror = function(e){ screenLogger('Error encountered: ' + e.message ); }; recorder2.ondataavailable = function( typedArray ){ console.log("data available 2 "); var dataBlob = new Blob( [typedArray], { type: 'audio/wav' } ); var form = new FormData(); form.append('file', dataBlob, "fileName"); form.append('title', "fileName2"); $.ajax({ type: 'POST', url: 'http://127.0.0.1:5000/send', crossDomain: true, data: form, cache: false, processData: false, contentType: false }).done(function(data,status) { console.log(data,status); screenLogger("result:",data); }); var fileName = new Date().toISOString() + ".wav"; var url = URL.createObjectURL( dataBlob ); var audio = document.createElement('audio'); audio.controls = true; audio.src = url; var link = document.createElement('a'); link.href = url; link.download = fileName; link.innerHTML = link.download; var li = document.createElement('li'); li.appendChild(link); li.appendChild(audio); recordingslist.appendChild(li); }; //#endregion

No problem :)

I should mention that this is open source too: https://github.com/maximecb/noisecraft

Awesome. I've put it online on GitHub over here :D https://github.com/maximecb/noisecraft

Currently I'm working on a version 2.0 (called NoiseCraft) which has some much needed usability enhancements such as undo/redo, group selection, copy and paste, and colorful connections that are easier to follow visually. Many more improvements to follow, and best of all, it's open source, ad-free and non-commercial. Currently this only works in Chrome because Firefox is missing ES6 imports in audioworklet, which should be fixed within a few months.

It needs testing, bug reports and a couple more features. If you are reading this, you can help this project just by using it and sharing things you make to help showcase the application, and let me know if you run into bugs. You can also check out NoiseCraft on GitHub if you would like to report bugs or participate in the implementation.