Examples of jm.audio.synth.Envelope

jm.audio.synth.Envelope
Envelope which can be set with an arbitrary number of points the envelope is constructed with linear lines between each specifed point. The points excepted by this class are positioned as a percent of the total length of the sound data being worked on and the envelope itself is constructed in the build() method.
Envelope objects can be used as either Generator Audio Objects (ie the first in the chain) or as processor Audio Objects (ie in the centre or the chain) depending on the constructor used.
As a generator the Envelope can be used to pass each envelope position onto another Audio Object as input data.
As a processor the Envelope object is used to change the Amplitude of incoming samples to reflect the shape of the envelope.
NOTE: The important distinction here is that when being used as a processor object the envelopes only possible function is to alter amplitude. But when used as a generator the Envelope can be used to send data to any AudioObjects input. (the volume of a volume object for example for doing crescendos on each note) @author Andrew Sorensen @version 1.0, Sun Feb 25 18:42:47 2001

        Value modfreq = new Value(this, this.sampleRate, this.channels, (float) 0.1);
        Oscillator sineMod = new Oscillator(modfreq, Oscillator.SINE_WAVE, Oscillator.FREQUENCY);
        sineMod.setAmp((float) this.modAmount);
        // filter
        Filter filt = new Filter(new AudioObject[]{osc, sineMod}, this.filterCutoff, Filter.HIGH_PASS);
        Envelope env = new Envelope(filt,
                new double[]{0.0, 0.0, 0.1, 1.0, 0.3, 0.6, 0.8, 0.2, 1.0, 0.0});
        SampleOut sout = new SampleOut(env);
    }

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     * this instrument will use
     */
    public void createChain() {
        Oscillator wt = new Oscillator(this, Oscillator.SQUARE_WAVE,
                this.sampleRate, channels);
        Envelope env = new Envelope(wt, envArray);
        Volume vol = new Volume(env);
        StereoPan span = new StereoPan(vol);
        if (output == RENDER) sout = new SampleOut(span);
    }

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     * any AudioObjects used by this instrument
     */
    public void createChain() {
        Noise osc = new Noise(this, Noise.WHITE_NOISE, this.sampleRate,
                this.channels);
        Envelope env = new Envelope(osc, new double[]{0.0, 0.0, 0.1, 1.0, 0.3, 0.0});
        Comb comb = new Comb(env, delay, decay);
        SampleOut sout = new SampleOut(comb);
    }

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     */
    public void createChain() {
        Pluck plk = new Pluck(this, sampleRate, channels, feedback);
        Volume vol = new Volume(plk);
        StereoPan pan = new StereoPan(vol);
        Envelope env = new Envelope(pan, new double[]{0.0, 1.0, 0.9, 1.0, 1.0, 0.0});
    }

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