gibberish-dsp/js/misc/time.js

Gibberish is designed to be an optimized API for audio synthesis using per-sample techniques.

module.exports = function( Gibberish ) {

  const Time = {
    bpm: 120,

    export: function(target) {
      Object.assign( target, Time )
    },

    ms : function(val) {
      return val * Gibberish.ctx.sampleRate / 1000;
    },

    seconds : function(val) {
      return val * Gibberish.ctx.sampleRate;
    },

    beats : function(val) {
      return function() { 
        var samplesPerBeat = Gibberish.ctx.sampleRate / ( Gibberish.Time.bpm / 60 ) ;
        return samplesPerBeat * val ;
      }
    }
  }

  return Time
}