Useful Console Code Thread

[Jacob_]

This will have a great impact on your creativity:

Code:

j = 0;
window.setInterval(function() {
    for (var i = 0; i < settings['numInstruments']; i++) {
        settings['instrumentColors'][i] = [Math.floor(Math.random() * 255), Math.floor(Math.random() * 255), Math.floor(Math.random() * 255)];
    };
    SequencerView.repaint();
    $('canvas').css('filter', 'blur(' + (Math.sin(j) * 8) + 'px)');
    j += 0.1;
}, 100);

What else can you come up with?

[Jonah]

very nice

[MTNHNG]

Is it possible to come up with a code to reverse play sound files..?

looɔ ǝq plnoʍ ʇɐɥʇ


Meh...

[Lumien]

Very useful, thank you

[Frank]

This will have a great impact on your creativity:

Code:

j = 0;
window.setInterval(function() {
    for (var i = 0; i < settings['numInstruments']; i++) {
        settings['instrumentColors'][i] = [Math.floor(Math.random() * 255), Math.floor(Math.random() * 255), Math.floor(Math.random() * 255)];
    };
    SequencerView.repaint();
    $('canvas').css('filter', 'blur(' + (Math.sin(j) * 8) + 'px)');
    j += 0.1;
}, 100);

What else can you come up with?

This is even better, it directly boosts creativity!

Code:

song = 'creative'

[Frank]

Code:

for (var inst = 0; inst < settings.numInstruments; inst = inst == 12 ? 17 : inst + 1) {
   loadInstrument(inst);
}
var id = setInterval(function() {
   if (Object.keys(audioSystem.sounds).length == 36) {
       clearInterval(id)
       for (var inst = 0; inst < settings.numInstruments; inst = inst == 12 ? 17 : inst + 1) {
           var source = audioSystem.audioContext.createBufferSource();
           source.buffer = audioSystem.sounds[inst];
           source.connect(audioSystem.gainNodes[inst]);
           source.start(audioSystem.audioContext.currentTime, 0, (72 - settings.min[inst]) * 30 / settings.originalBpm[inst]);
           delete source;
       }
   }
}, 100)

This will download all the notes to your brain, boosting productivity via caching. You have to wait for all the notes to load though, so be patient.

[Frank]

Code:

for (var inst = 0; inst < settings.numInstruments; inst = inst == 12 ? 17 : inst + 1) {
   loadInstrument(inst);
}
var id = setInterval(function() {
   if (Object.keys(audioSystem.sounds).length == 36) {
       clearInterval(id)
       for (var inst = 0; inst < settings.numInstruments; inst = inst == 12 ? 17 : inst + 1) {
           var source = audioSystem.audioContext.createBufferSource();
           source.buffer = audioSystem.sounds[inst];
           source.connect(audioSystem.gainNodes[inst]);
           source.start(audioSystem.audioContext.currentTime, 0, (72 - settings.min[inst]) * 30 / settings.originalBpm[inst]);
           delete source;
       }
   }
}, 100)

This will download all the notes to your brain, boosting productivity via caching. You have to wait for all the notes to load though, so be patient.

I could have used isSynthInstrument but I am too lazy to update.

[Jacob_]

Code:

loadInstrument(13);
var el = $('<input type="file" accept="audio/*">');
$(document.body).append(el);

el.on('change', function(e){
    var reader = new FileReader();
    reader.onload = function (e) {
        var context = new AudioContext();
        context.decodeAudioData(e.target.result, function(buffer){
            var node = context.createAnalyser();
            // node.connect(context.destination);
            var resolution = 4;
            node.fftSize = 4096;
            node.smoothingTimeConstant = 0;
            var bufferLength = node.frequencyBinCount;
            var dataArray = new Uint8Array(bufferLength);
            var audioSource = context.createBufferSource();
            audioSource.buffer = buffer;
            audioSource.loop = false;
            audioSource.connect(node);
            var time = 0;
            audioSource.start(0);  
            setInterval(function(){
                node.getByteFrequencyData(dataArray);
                var f = [];
                for (var i = 1; i < dataArray.length - 1; i++) {
                  var isPeak = dataArray[i] >= dataArray[i-1] && dataArray[i] >= dataArray[i+1];
                  if (isPeak) {
                    f.push([i, dataArray[i]]);
                  }
                }
                f.sort(function(a, b){return b[1] - a[1]});
                var added = 0;
                var i = 0;
                while (added < 4) {
                  if (i >= f.length) break;
                  var frequency = f[i][0] * context.sampleRate / node.fftSize;
                  var note = piano[Math.round((piano.length*Math.log(2)+12*Math.log(55/frequency)+Math.log(4))/(Math.log(2)))];
                  if (note != undefined && f[i][1] > 32) {
                    song.addNote(new Note(song, note, time/resolution, 1/resolution, 13));
                    added++;
                  }
                  i++;
                }
                time++;
            }, song.sleepTime/resolution);
            setInterval(SequencerView.repaint, 1000);
        });
    }
    
    reader.readAsArrayBuffer(e.target.files[0]);
});

el.click();

[blobertthebob]

Code:

loadInstrument(13);
var el = $('<input type="file" accept="audio/*">');
$(document.body).append(el);

el.on('change', function(e){
   var reader = new FileReader();
   reader.onload = function (e) {
       var context = new AudioContext();
       context.decodeAudioData(e.target.result, function(buffer){
           var node = context.createAnalyser();
           var resolution = 4;
           node.fftSize = 4096;
           node.smoothingTimeConstant = 0;
           var bufferLength = node.frequencyBinCount;
           var dataArray = new Uint8Array(bufferLength);
           var audioSource = context.createBufferSource();
           audioSource.buffer = buffer;
           audioSource.loop = false;
           audioSource.connect(node);
           var time = 0;
           audioSource.start(0);  
           setInterval(function(){
               node.getByteFrequencyData(dataArray);
               var f = [];
               for (var i = 1; i < dataArray.length - 1; i++) {
                 var isPeak = dataArray[i] >= dataArray[i-1] && dataArray[i] >= dataArray[i+1];
                 if (isPeak) {
                   f.push([i, dataArray[i]]);
                 }
               }
               f.sort(function(a, b){return b[1] - a[1]});
               for(var i = 0; i < Math.min(f.length, 4); i++) {
                 var frequency = f[i][0] * context.sampleRate / node.fftSize;
                 var note = piano[Math.round((piano.length*Math.log(2)+12*Math.log(55/frequency)+Math.log(4))/(Math.log(2)))];
                 if (note != undefined && f[i][1] > 32) {
                   song.addNote(new Note(song, note, time/resolution, 1/resolution, 13));
                 }
               }
               time++;
           }, song.sleepTime/resolution);
           setInterval(SequencerView.repaint, 1000);
       });
   }
   
   reader.readAsArrayBuffer(e.target.files[0]);
});

el.click();

this is dank

[Frank]

Code:

loadInstrument(13);
var el = $('<input type="file" accept="audio/*">');
$(document.body).append(el);

el.on('change', function(e){
   var reader = new FileReader();
   reader.onload = function (e) {
       var context = new AudioContext();
       context.decodeAudioData(e.target.result, function(buffer){
           var node = context.createAnalyser();
           var resolution = 4;
           node.fftSize = 4096;
           node.smoothingTimeConstant = 0;
           var bufferLength = node.frequencyBinCount;
           var dataArray = new Uint8Array(bufferLength);
           var audioSource = context.createBufferSource();
           audioSource.buffer = buffer;
           audioSource.loop = false;
           audioSource.connect(node);
           var time = 0;
           audioSource.start(0);  
           setInterval(function(){
               node.getByteFrequencyData(dataArray);
               var f = [];
               for (var i = 1; i < dataArray.length - 1; i++) {
                 var isPeak = dataArray[i] >= dataArray[i-1] && dataArray[i] >= dataArray[i+1];
                 if (isPeak) {
                   f.push([i, dataArray[i]]);
                 }
               }
               f.sort(function(a, b){return b[1] - a[1]});
               for(var i = 0; i < Math.min(f.length, 4); i++) {
                 var frequency = f[i][0] * context.sampleRate / node.fftSize;
                 var note = piano[Math.round((piano.length*Math.log(2)+12*Math.log(55/frequency)+Math.log(4))/(Math.log(2)))];
                 if (note != undefined && f[i][1] > 32) {
                   song.addNote(new Note(song, note, time/resolution, 1/resolution, 13));
                 }
               }
               time++;
           }, song.sleepTime/resolution);
           setInterval(SequencerView.repaint, 1000);
       });
   }
   
   reader.readAsArrayBuffer(e.target.files[0]);
});

el.click();

this is dank

Agreed, I was considering doing something like this, but I thought it was impossible. Who knows, maybe I should try to outdo this.