private double processModulation(object state)
{
if (!IsDisposed && ModulationEnabled)
{
double radian = 2 * Math.PI * (modulationStep / HighPrecisionTimer.TIMER_BASIC_1KHZ);
double mdepth = 0;
if (ParentModule.ModulationDepthes[NoteOnEvent.Channel] > 64)
{
if (modulationStartCounter < 10d * HighPrecisionTimer.TIMER_BASIC_1KHZ)
{
modulationStartCounter += 1.0;
}
if (modulationStartCounter > ParentModule.GetModulationDelaySec(NoteOnEvent.Channel) * HighPrecisionTimer.TIMER_BASIC_1KHZ)
{
mdepth = (double)ParentModule.ModulationDepthes[NoteOnEvent.Channel] / 127d;
}
}
//急激な変化を抑制
var mv = ((double)ParentModule.Modulations[NoteOnEvent.Channel] / 127d) + mdepth;
if (mv != modulationLevel)
{
modulationLevel += (mv - modulationLevel) / 1.25;
}
double modHz = radian * ParentModule.GetModulationRateHz(NoteOnEvent.Channel);
ModultionDeltaNoteNumber = modulationLevel * Math.Sin(modHz);
ModultionDeltaNoteNumber *= ((double)ParentModule.ModulationDepthRangesNote[NoteOnEvent.Channel] +
((double)ParentModule.ModulationDepthRangesCent[NoteOnEvent.Channel] / 127d));
OnPitchUpdated();
if (modulationStep == 0 && IsSoundOff)
{
return(-1);
}
modulationStep += 1.0;
if (modHz > 2 * Math.PI)
{
modulationStep = 0;
}
return(1);
}
return(-1);
}