private void Initialize()
{
//initialize mixer to take inputs
mixingSampleProvider = new MixingSampleProvider(WaveFormat.CreateIeeeFloatWaveFormat(sampleRate, channels));
mixingSampleProvider.ReadFully = true;
// TODO: this is a major issue!
//waveOut.DesiredLatency = 150;
//initialize variables
primarySustain = amplitude;
secondarySustain = amplitude;
//setup signal generators
primarySignalGenerator = new SignalGenerator(sampleRate, channels);
primarySignalGenerator.Type = currentPrimaryWaveType;
secondarySignalGenerator = new SignalGenerator(sampleRate, channels);
secondarySignalGenerator.Type = currentSecondaryWaveType;
adsr1Array = new AdsrSampleProvider[_polyPhony];
adsr2Array = new AdsrSampleProvider[_polyPhony];
sigGen1Array = new SignalGenerator[_polyPhony];
sigGen2Array = new SignalGenerator[_polyPhony];
lpf1Array = new LowPassFilterSampleProvider[_polyPhony];
lpf2Array = new LowPassFilterSampleProvider[_polyPhony];
for (int i = 0; i < _polyPhony; i++)
{
// primary
sigGen1Array[i] = new SignalGenerator(sampleRate, channels);
sigGen1Array[i].Type = currentPrimaryWaveType;
sigGen1Array[i].Gain = primaryGain;
lpf1Array[i] = new LowPassFilterSampleProvider(sigGen1Array[i].ToWaveProvider().ToSampleProvider());
adsr1Array[i] = new AdsrSampleProvider(lpf1Array[i].ToWaveProvider().ToSampleProvider(), primaryAttack, primaryDecay, primarySustain, primaryRelease);
// secondary
sigGen2Array[i] = new SignalGenerator(sampleRate, channels);
sigGen2Array[i].Type = currentSecondaryWaveType;
sigGen2Array[i].Gain = secondaryGain;
lpf2Array[i] = new LowPassFilterSampleProvider(sigGen2Array[i].ToWaveProvider().ToSampleProvider());
adsr2Array[i] = new AdsrSampleProvider(lpf2Array[i].ToWaveProvider().ToSampleProvider(), secondaryAttack, secondaryDecay, secondarySustain, secondaryRelease);
}
//LFSignalGenerator = new SignalGenerator(sampleRate, channels);
//LFSignalGenerator.Gain = 0.1;
//LFSignalGenerator.Type = LFOWaveType ;
}
public void StartWave(Double frequency)
{
// if this method is being called twice in a row before the call to StopWave...
if (isStopped == false)
{
StopWave();
Console.WriteLine("Consecutive StartWave call detected");
}
//if primary oscillator is active, chain effects
if (primaryOscillator)
{
//wrap signal generator in adsr envelope and add to mixer
//order of processing is Signal -> LPF -> ADSR -> Mixer
sigGen1Array[_oscIndex].Frequency = DetuneOctave(frequency, OscillatorIndex.Primary);
lpf1Array[_oscIndex] = new LowPassFilterSampleProvider(sigGen1Array[_oscIndex].ToWaveProvider().ToSampleProvider());
adsr1Array[_oscIndex] = new AdsrSampleProvider(sigGen1Array[_oscIndex].ToWaveProvider().ToSampleProvider(), primaryAttack, primaryDecay, primarySustain, primaryRelease);
mixingSampleProvider.AddMixerInput(adsr1Array[_oscIndex]);
} //same chaining process for secondary oscillator
if (secondaryOscillator)
{
sigGen2Array[_oscIndex].Frequency = DetuneOctave(frequency, OscillatorIndex.Secondary);
lpf2Array[_oscIndex] = new LowPassFilterSampleProvider(sigGen2Array[_oscIndex].ToWaveProvider().ToSampleProvider());
adsr2Array[_oscIndex] = new AdsrSampleProvider(sigGen2Array[_oscIndex].ToWaveProvider().ToSampleProvider(), secondaryAttack, secondaryDecay, secondarySustain, secondaryRelease);
mixingSampleProvider.AddMixerInput(adsr2Array[_oscIndex]);
}
isStopped = false;
//add LFO signalto mixer
//if (LFO)
//{
// LFSignalGenerator.Frequency = 5;
// OffsetSampleProvider offsetSampleProvider = new OffsetSampleProvider(LFSignalGenerator.ToWaveProvider().ToSampleProvider());
// mixingSampleProvider.AddMixerInput(offsetSampleProvider);
//}
// increment the play index upon each play
// _oscIndex = _oscIndex == _polyPhony - 1 ? 0 : _oscIndex + 1;
}
public MixingSampleProvider PreparePlay(double frequency)
{
//if primary oscillator is active, chain effects
if (primaryOscillator)
{
//wrap signal generator in adsr envelope and add to mixer
//order of processing is Signal -> LPF -> ADSR -> Mixer
sigGen1Array[_oscIndex].Frequency = DetuneOctave(frequency, OscillatorIndex.Primary);
lpf1Array[_oscIndex] = new LowPassFilterSampleProvider(sigGen1Array[_oscIndex].ToWaveProvider().ToSampleProvider());
adsr1Array[_oscIndex] = new AdsrSampleProvider(sigGen1Array[_oscIndex].ToWaveProvider().ToSampleProvider(), primaryAttack, primaryDecay, primarySustain, primaryRelease);
mixingSampleProvider.AddMixerInput(adsr1Array[_oscIndex]);
} //same chaining process for secondary oscillator
if (secondaryOscillator)
{
sigGen2Array[_oscIndex].Frequency = DetuneOctave(frequency, OscillatorIndex.Secondary);
lpf2Array[_oscIndex] = new LowPassFilterSampleProvider(sigGen2Array[_oscIndex].ToWaveProvider().ToSampleProvider());
adsr2Array[_oscIndex] = new AdsrSampleProvider(sigGen2Array[_oscIndex].ToWaveProvider().ToSampleProvider(), secondaryAttack, secondaryDecay, secondarySustain, secondaryRelease);
mixingSampleProvider.AddMixerInput(adsr2Array[_oscIndex]);
}
// Console.WriteLine("Oscillator Passing " + mixingSampleProvider.MixerInputs.Count() + "inputs");
return(mixingSampleProvider);
}