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Version 4.2.0

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This commit is contained in:
Gary Scavone
2009-03-24 23:02:14 -04:00
committed by Stephen Sinclair
parent cf06b7598b
commit a6381b9d38
281 changed files with 17152 additions and 12000 deletions
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69
src/TwoZero.cpp
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@@ -8,7 +8,7 @@
frequency response while maintaining a
constant filter gain.
by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
*/
/***************************************************/
@@ -17,9 +17,10 @@
TwoZero :: TwoZero() : Filter()
{
MY_FLOAT B[3] = {1.0, 0.0, 0.0};
MY_FLOAT A = 1.0;
Filter::setCoefficients( 3, B, 1, &A );
std::vector<StkFloat> b(3, 0.0);
b[0] = 1.0;
std::vector<StkFloat> a(1, 1.0);
Filter::setCoefficients( b, a );
}
TwoZero :: ~TwoZero()
@@ -31,64 +32,66 @@ void TwoZero :: clear(void)
Filter::clear();
}
void TwoZero :: setB0(MY_FLOAT b0)
void TwoZero :: setB0(StkFloat b0)
{
b[0] = b0;
b_[0] = b0;
}
void TwoZero :: setB1(MY_FLOAT b1)
void TwoZero :: setB1(StkFloat b1)
{
b[1] = b1;
b_[1] = b1;
}
void TwoZero :: setB2(MY_FLOAT b2)
void TwoZero :: setB2(StkFloat b2)
{
b[2] = b2;
b_[2] = b2;
}
void TwoZero :: setNotch(MY_FLOAT frequency, MY_FLOAT radius)
void TwoZero :: setNotch(StkFloat frequency, StkFloat radius)
{
b[2] = radius * radius;
b[1] = (MY_FLOAT) -2.0 * radius * cos(TWO_PI * (double) frequency / Stk::sampleRate());
b_[2] = radius * radius;
b_[1] = (StkFloat) -2.0 * radius * cos(TWO_PI * (double) frequency / Stk::sampleRate());
// Normalize the filter gain.
if (b[1] > 0.0) // Maximum at z = 0.
b[0] = 1.0 / (1.0+b[1]+b[2]);
if (b_[1] > 0.0) // Maximum at z = 0.
b_[0] = 1.0 / (1.0+b_[1]+b_[2]);
else // Maximum at z = -1.
b[0] = 1.0 / (1.0-b[1]+b[2]);
b[1] *= b[0];
b[2] *= b[0];
b_[0] = 1.0 / (1.0-b_[1]+b_[2]);
b_[1] *= b_[0];
b_[2] *= b_[0];
}
void TwoZero :: setGain(MY_FLOAT theGain)
void TwoZero :: setGain(StkFloat gain)
{
Filter::setGain(theGain);
Filter::setGain(gain);
}
MY_FLOAT TwoZero :: getGain(void) const
StkFloat TwoZero :: getGain(void) const
{
return Filter::getGain();
}
MY_FLOAT TwoZero :: lastOut(void) const
StkFloat TwoZero :: lastOut(void) const
{
return Filter::lastOut();
}
MY_FLOAT TwoZero :: tick(MY_FLOAT sample)
StkFloat TwoZero :: tick(StkFloat sample)
{
inputs[0] = gain * sample;
outputs[0] = b[2] * inputs[2] + b[1] * inputs[1] + b[0] * inputs[0];
inputs[2] = inputs[1];
inputs[1] = inputs[0];
inputs_[0] = gain_ * sample;
outputs_[0] = b_[2] * inputs_[2] + b_[1] * inputs_[1] + b_[0] * inputs_[0];
inputs_[2] = inputs_[1];
inputs_[1] = inputs_[0];
return outputs[0];
return outputs_[0];
}
MY_FLOAT *TwoZero :: tick(MY_FLOAT *vector, unsigned int vectorSize)
StkFloat *TwoZero :: tick(StkFloat *vector, unsigned int vectorSize)
{
for (unsigned int i=0; i<vectorSize; i++)
vector[i] = tick(vector[i]);
return vector;
return Filter::tick( vector, vectorSize );
}
StkFrames& TwoZero :: tick( StkFrames& frames, unsigned int channel )
{
return Filter::tick( frames, channel );
}