/// <summary>
/// Constructor
/// </summary>
/// <param name="samplingRate"></param>
/// <param name="lfo"></param>
/// <param name="q"></param>
public PhaserEffect(int samplingRate, SignalBuilder lfo, float q = 0.5f)
{
_fs = samplingRate;
Q = q;
Lfo = lfo;
_filter = new NotchFilter(Lfo.NextSample() / _fs, Q);
}
public override float NextSample()
{
var sample = _builder.NextSample();
if (_last > 0)
{
sample *= _last-- / (float)FadeSamples;
}
else if (_first < FadeSamples)
{
sample *= _first++ / (float)FadeSamples;
}
return(sample);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="samplingRate"></param>
/// <param name="q"></param>
/// <param name="lfoFrequency"></param>
/// <param name="minFrequency"></param>
/// <param name="maxFrequency"></param>
public PhaserEffect(int samplingRate,
float lfoFrequency = 1.0f,
float minFrequency = 300,
float maxFrequency = 3000,
float q = 0.5f)
{
_fs = samplingRate;
Lfo = new TriangleWaveBuilder().SampledAt(samplingRate);
LfoFrequency = lfoFrequency;
MinFrequency = minFrequency;
MaxFrequency = maxFrequency;
Q = q;
_filter = new NotchFilter(Lfo.NextSample() / _fs, Q);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public override float NextSample()
{
var sample = _builder.NextSample();
if (FadeStarted || _index++ > Length - _fadeOutSampleCount)
{
sample *= (float)_fadeOutIndex-- / _fadeOutSampleCount;
FadeStarted = !FadeFinished;
}
if (_fadeInIndex < _fadeInSampleCount)
{
sample *= (float)_fadeInIndex++ / _fadeInSampleCount;
}
return(sample);
}