PJSAudio

PJSAudio is a comprehensive audio library for javascript/processing.js. PJSAudio
includes many functions for signal analysis and generation. 

Modules:

  DFT(bufferSize, sampleRate): Discrete Fourier Transform

    Usage: 

    var dft = new DFT(1024, 44100);
    dft.forward(signal);
    var spectrum = dft.spectrum;


  FFT(bufferSize, sampleRate): Fast Fourier Transform

    Usage:

    var fft = new FFT(2048, 44100);
    fft.forward(signal);
    var spectrum = fft.spectrum;


  Oscillator(waveform, frequency, amplitude, bufferSize, sampleRate): Signal Generator
    * Sine wave
    * Square wave
    * Saw wave
    * Triangle wave

    Usage:

    var osc = new Oscillator(SINEWAVE, 440, 1, 2048, 22050);
    osc.generate();
    var signal = osc.signal;


  ADSR(attack, decay, sustainLevel, sustain, release, sampleRate): Attack-Decay-Sustain-Release Envelope
    
    Usage:

    var envelope = new ADSR(0.01, 0.1, 0.5, 0.1, 0.2, 44100);
    envelope.process(signal);


  IIRFilter(filter, cutoff, sampleRate): Infinite Impulse Response Filters
    * Low Pass Filter
    * High Pass Filter

    Usage:

    var filter = IIRFilter(LOWPASS, 200, 44100);
    filter.process(signal);


  BeatDetektor (by Charles J. Cliffe): BPM detector


@corban                                                    weare.buildingsky.net
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       Copyright (c) 2010 Corban Brook, released under the LGPL license