public LookaheadLimiter(WaveProvider32 input, float limit, int bufferSize) : base(input)
{
_multiplierL = _multiplierR = 1;
_limit = limit;
_bufferL = new float[bufferSize];
_bufferR = new float[bufferSize];
}
public void AddInput(WaveProvider32 waveProvider)
{
if (!waveProvider.WaveFormat.Equals(WaveFormat))
{
throw new ArgumentException("All incoming channels must have the same format", "waveProvider.WaveFormat");
}
_toAdd.Add(waveProvider);
}
public LowPassFeedBackCombFilter(WaveProvider32 input, int delay, float f, float d, int stereoSpread) : base(input)
{
_left = true;
_stereoSpread = stereoSpread;
Feedback = f;
Damping = d;
_xl = new float[delay];
_xr = new float[delay + stereoSpread];
_yl = new float[delay];
_yr = new float[delay + stereoSpread];
}
public AllPassFilter(WaveProvider32 input, int delay, float gain) : base(input)
{
left = true;
g = gain;
xl = new float[delay];
xr = new float[delay];
yl = new float[delay];
yr = new float[delay];
for (int i = 0; i < delay; ++i)
{
xl[i] = xr[i] = yl[i] = yr[i] = 0;
}
posl = posr = 0;
}
public BiQuadFilter(WaveProvider32 input) : base(input)
{
_a = new double[3];
_b = new double[3];
_xl = new double[2];
_yl = new double[2];
_xr = new double[2];
_yr = new double[2];
_left = true;
_cutoff = 1000;
_q = (float)(Math.Sqrt(2) / 2);
_mode = FilterMode.LowPass;
UpdateCoefsLowPass();
}
// input x4 -> _lbcf[0-4] -> _mixer[0] \
// > _mixer[2] -> _ap[0] -> _ap[1] -> _ap[2] -> _ap[3] -> output
// input x4 -> _lbcf[5-7] -> _mixer[1] /
public Freeverb(WaveProvider32 input, float roomSize, float damping) : base(input)
{
_inputCopy = new DummyWaveProvider32(input.WaveFormat.SampleRate, input.WaveFormat.Channels);
_lbcf = new[]
{
new LowPassFeedBackCombFilter(_inputCopy, 1557 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1617 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1491 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1422 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1277 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1356 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1188 * WaveFormat.SampleRate / 44100, roomSize, damping, 23),
new LowPassFeedBackCombFilter(_inputCopy, 1116 * WaveFormat.SampleRate / 44100, roomSize, damping, 23)
};
var mixers = new[]
{
new WaveMixer32(input.WaveFormat.SampleRate, input.WaveFormat.Channels)
{
Mode = MixerMode.Averaging
},
new WaveMixer32(input.WaveFormat.SampleRate, input.WaveFormat.Channels)
{
Mode = MixerMode.Averaging
},
new WaveMixer32(input.WaveFormat.SampleRate, input.WaveFormat.Channels)
{
Mode = MixerMode.Averaging
}
};
mixers[0].AddInputs(new[] { _lbcf[0], _lbcf[1], _lbcf[2], _lbcf[3] });
mixers[1].AddInputs(new[] { _lbcf[4], _lbcf[5], _lbcf[6], _lbcf[7] });
mixers[2].AddInputs(new[] { mixers[0], mixers[1] });
_ap = new AllPassFilterAprox[4];
_ap[0] = new AllPassFilterAprox(mixers[2], 225 * WaveFormat.SampleRate / 44100, .5f, 23);
_ap[1] = new AllPassFilterAprox(_ap[0], 556 * WaveFormat.SampleRate / 44100, .5f, 23);
_ap[2] = new AllPassFilterAprox(_ap[1], 441 * WaveFormat.SampleRate / 44100, .5f, 23);
_ap[3] = new AllPassFilterAprox(_ap[2], 341 * WaveFormat.SampleRate / 44100, .5f, 23);
}
public AllPassFilterAprox(WaveProvider32 input, int delay, float gain, int stereoSpread) : base(input)
{
_left = true;
Gain = gain;
_xl = new float[delay];
_xr = new float[delay + stereoSpread];
_yl = new float[delay];
_yr = new float[delay + stereoSpread];
for (var i = 0; i < delay; ++i)
{
_xl[i] = _xr[i] = _yl[i] = _yr[i] = 0;
}
for (var i = delay; i < delay + stereoSpread; ++i)
{
_xr[i] = _yr[i] = 0;
}
_posl = _posr = 0;
}
public void RemoveInput(WaveProvider32 waveProvider)
{
_toRemove.Add(waveProvider);
}
public WaveMixer32(WaveProvider32 firstInput) : this(firstInput.WaveFormat.SampleRate, firstInput.WaveFormat.Channels)
{
_inputs.Add(firstInput);
}
protected WaveEffect32(WaveProvider32 input) : base(input.WaveFormat.SampleRate, input.WaveFormat.Channels)
{
Input = input;
Wet = 1;
}
