CreateSynth

Hello World

Content:
- Some descriptions
- Methods

Returns a Synth object which can produces a variety of sounds, sound effects and music.

syn = app.CreateSynth( type ) → app object: Synth

Some descriptions

note length: default is 2.56 seconds.
midi note: like n'th key on a keyboard between 0 and ~125. 12 keys are one octave. Ie. the 4'th octave:
C, C#, D, D#, E, F, F#, G, G#, A, A#, B.
duration: powers of two indicating whole, half, quarter etc. up to thirty second notes.
frequency: A4 equals 440 Hz. Each note frequency is 12√2 (~1.06) times higher than the previous.
Humans can hear a range from 10 to about 20,000 Hz. My phone's range is from 0 to about 11025 Hz

Phaser: a sound filter which creates a series of peaks and troughs in the frequency spectrum
VoltageControlledAmplifier: (Variable-Gain Amplifier) electronic amplifier that varies its gain
Voltage-Controlled Filter: electronic amplifier that varies the frequency

Example - Tetris Theme click to expand contents

function OnStart()
{
    syn = app.CreateSynth();
    syn.SetWaveShape( "Saw" );
    syn.SetVcaSustain( 0.5 );
    syn.SetVolume( 1, 1 );
    syn.SetNoteLength( 2 );

    syn.PlayMidiTune(
        "76:4,71:8,72:8,74:4,72:8,71:8,69:4,69:8,72:8,76:4," +
        "74:8,72:8,71:4,71:8,72:8,74:4,76:4,72:4,69:4,69:8," +
        "69:8,71:8,72:8,74:8,74:4,77:8,81:4,79:8,77:8,76:8,76:4,72:8,76:4," +
        "74:8,72:8,71:4,71:8,72:8,74:4,76:4,72:4,69:4,69:4"
    );
}

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Example - Multiple Synths Song click to expand contents

function OnStart()
{
    synth1 = app.CreateSynth();
    synth1.SetWaveShape( "Saw" );
    synth1.SetVcaSustain( 0.5 );
    synth1.SetVcaDecay( 500 );
    synth1.SetVolume( 1, 1 );

    synth2 = app.CreateSynth();
    synth2.SetWaveShape( "Saw" );
    synth2.SetVcaDecay( 300 );
    synth2.SetVolume( 1, 1 );

    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 0*5120);
    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 1*5120);
    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 2*5120);
    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 3*5120);
    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 4*5120);
    setTimeout('synth1.PlayMidiTune("35:4,35:4,35:4,35:4,31:4,31:4,30:4,30:4")', 5*5120);

    setTimeout('synth2.PlayMidiTune("59:4,59:8,59:8,62:8,59:4,57:8,55:2,54:2")', 2*5120);
    setTimeout('synth2.PlayMidiTune("59:8,59:4,59:8,62:8,59:4,57:8,55:8,57:4,55:8,54:2")', 3*5120);
    setTimeout('synth2.PlayMidiTune("59:4,59:8,59:8,62:8,59:4,57:8,55:2,54:2")', 4*5120);
    setTimeout('synth2.PlayMidiTune("59:8,59:4,59:8,62:8,59:4,57:8,55:8,57:4,55:8,54:2")', 5*5120);
}

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