diff options
Diffstat (limited to 'intern/audaspace/FX/AUD_HighpassFactory.cpp')
-rw-r--r-- | intern/audaspace/FX/AUD_HighpassFactory.cpp | 26 |
1 files changed, 2 insertions, 24 deletions
diff --git a/intern/audaspace/FX/AUD_HighpassFactory.cpp b/intern/audaspace/FX/AUD_HighpassFactory.cpp index ba5297d21ed..2456085a8a1 100644 --- a/intern/audaspace/FX/AUD_HighpassFactory.cpp +++ b/intern/audaspace/FX/AUD_HighpassFactory.cpp @@ -29,33 +29,11 @@ #include "AUD_HighpassFactory.h" #include "AUD_IIRFilterReader.h" - -#include <cmath> - -#ifndef M_PI -#define M_PI 3.14159265358979323846 -#endif +#include "AUD_HighpassCalculator.h" AUD_HighpassFactory::AUD_HighpassFactory(boost::shared_ptr<AUD_IFactory> factory, float frequency, float Q) : - AUD_DynamicIIRFilterFactory(factory), - m_frequency(frequency), - m_Q(Q) + AUD_DynamicIIRFilterFactory(factory, boost::shared_ptr<AUD_IDynamicIIRFilterCalculator>(new AUD_HighpassCalculator(frequency, Q))) { } -void AUD_HighpassFactory::recalculateCoefficients(AUD_SampleRate rate, - std::vector<float> &b, - std::vector<float> &a) -{ - float w0 = 2.0 * M_PI * (AUD_SampleRate)m_frequency / rate; - float alpha = (float)(sin(w0) / (2.0 * (double)m_Q)); - float norm = 1 + alpha; - float c = cos(w0); - a.push_back(1); - a.push_back(-2 * c / norm); - a.push_back((1 - alpha) / norm); - b.push_back((1 + c) / (2 * norm)); - b.push_back((-1 - c) / norm); - b.push_back(b[0]); -} |