public static void Start(this VolumeEnvelope envelope, RegionPair region, int key, int velocity)
{
// If the release time is shorter than 10 ms, it will be clamped to 10 ms to avoid pop noise.
var delay = region.DelayVolumeEnvelope;
var attack = region.AttackVolumeEnvelope;
var hold = region.HoldVolumeEnvelope * SoundFontMath.KeyNumberToMultiplyingFactor(region.KeyNumberToVolumeEnvelopeHold, key);
var decay = region.DecayVolumeEnvelope * SoundFontMath.KeyNumberToMultiplyingFactor(region.KeyNumberToVolumeEnvelopeDecay, key);
var sustain = SoundFontMath.DecibelsToLinear(-region.SustainVolumeEnvelope);
var release = Math.Max(region.ReleaseVolumeEnvelope, 0.01F);
envelope.Start(delay, attack, hold, decay, sustain, release);
}
internal Voice(Synthesizer synthesizer)
{
this.synthesizer = synthesizer;
volEnv = new VolumeEnvelope(synthesizer);
modEnv = new ModulationEnvelope(synthesizer);
vibLfo = new Lfo(synthesizer);
modLfo = new Lfo(synthesizer);
oscillator = new Oscillator(synthesizer);
filter = new BiQuadFilter(synthesizer);
block = new float[synthesizer.BlockSize];
}
public static void Start(this VolumeEnvelope envelope, InstrumentRegion region, int key, int velocity)
{
Start(envelope, new RegionPair(PresetRegion.Default, region), key, velocity);
}