void OnAudioFilterRead(float[] data, int channels)
{
if (channels != 2)
{
error = "This filter only supports stereo audio (given:" + channels + ")";
return;
}
for (var i = 0; i < data.Length; i += 2)
{
var input = 0.5f * (data [i] + data [i + 1]);
var temp0 = allpassCoeff * allpass1.Last;
temp0 += input;
temp0 = allpass1.Tick(temp0) - allpassCoeff * temp0;
var temp1 = allpassCoeff * allpass2.Last;
temp1 += temp0;
temp1 = allpass2.Tick(temp1) - allpassCoeff * temp1;
var out1 = comb1.Tick(temp1 + comb1Coeff * comb1.Last);
var out2 = comb2.Tick(temp1 + comb2Coeff * comb2.Last);
out1 = wetMix * out1 + (1.0f - wetMix) * data [i];
out2 = wetMix * out2 + (1.0f - wetMix) * data [i + 1];
data [i] = out1;
data [i + 1] = out2;
}
}
void OnAudioFilterRead(float[] data, int channels)
{
for (int i = 0; i < data.Length; i += 2)
{
var smpL = data [i] * gain;
var smpR = data [i + 1] * gain;
smpL = left.Tick(smpL);
smpR = right.Tick(smpR);
var input = 0.5f * (smpL + smpR);
var temp0 = allpassCoeff * allpass1.Last;
temp0 += input;
temp0 = allpass1.Tick(temp0) - allpassCoeff * temp0;
var temp1 = allpassCoeff * allpass2.Last;
temp1 += temp0;
temp1 = allpass2.Tick(temp1) - allpassCoeff * temp1;
var out1 = comb1.Tick(temp1 + comb1Coeff * comb1.Last);
var out2 = comb2.Tick(temp1 + comb2Coeff * comb2.Last);
out1 = fadeMix * out1 + (1.0f - fadeMix) * smpL;
out2 = fadeMix * out2 + (1.0f - fadeMix) * smpR;
smpL = out1;
smpR = out2;
smpL = eL.Process(smpL);
smpR = eR.Process(smpR);
data [i] = smpL < -1?-1:smpL > 1?1:smpL;
data [i + 1] = smpR < -1?-1:smpR > 1?1:smpR;
}
}
// Tick function.
public StereoFrame Tick(float input)
{
const float AllpassCoeff = 0.7f;
var temp0 = AllpassCoeff * allpassLine1.NextOut;
temp0 += input;
temp0 = allpassLine1.Tick(temp0) - AllpassCoeff * temp0;
var temp1 = AllpassCoeff * allpassLine2.NextOut;
temp1 += temp0;
temp1 = allpassLine2.Tick(temp1) - AllpassCoeff * temp1;
var out1 = combLine1.Tick(temp1 + combCoeff1 * combLine1.NextOut);
var out2 = combLine2.Tick(temp1 + combCoeff2 * combLine2.NextOut);
return(new StereoFrame(out1, out2));
}
