allanger/paulxstretch
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Use global constant for pi instead of define. Calculate sinus transform in envelope transform only if amount more than zero.

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xenakios
2018-03-26 15:40:30 +03:00
parent 52ebb38415
commit 8421269565
4 changed files with 11 additions and 12 deletions
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12
Source/PS_Source/Stretch.cpp
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@ -94,7 +94,7 @@ void FFT::smp2freq()
void FFT::freq2smp()
{
REALTYPE inv_2p15_2pi=1.0f/16384.0f*(float)M_PI;
REALTYPE inv_2p15_2pi=1.0f/16384.0f*(float)c_PI;
for (int i=1;i<nsamples/2;i++)
{
unsigned int rand = m_randdist(m_randgen);
@ -120,16 +120,16 @@ void FFT::applywindow(FFTWindow type)
for (int i=0;i<nsamples;i++) window.data[i]=0.707f;
break;
case W_HAMMING:
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.53836-0.46164*cos(2.0*M_PI*i/(nsamples+1.0)));
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.53836-0.46164*cos(2.0*c_PI*i/(nsamples+1.0)));
break;
case W_HANN:
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.5*(1.0-cos(2*M_PI*i/(nsamples-1.0))));
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.5*(1.0-cos(2*c_PI*i/(nsamples-1.0))));
break;
case W_BLACKMAN:
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.42-0.5*cos(2*M_PI*i/(nsamples-1.0))+0.08*cos(4*M_PI*i/(nsamples-1.0)));
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.42-0.5*cos(2*c_PI*i/(nsamples-1.0))+0.08*cos(4*c_PI*i/(nsamples-1.0)));
break;
case W_BLACKMAN_HARRIS:
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.35875-0.48829*cos(2*M_PI*i/(nsamples-1.0))+0.14128*cos(4*M_PI*i/(nsamples-1.0))-0.01168*cos(6*M_PI*i/(nsamples-1.0)));
for (int i=0;i<nsamples;i++) window.data[i]=(float)(0.35875-0.48829*cos(2*c_PI*i/(nsamples-1.0))+0.14128*cos(4*c_PI*i/(nsamples-1.0))-0.01168*cos(6*c_PI*i/(nsamples-1.0)));
break;
};
@ -305,7 +305,7 @@ REALTYPE Stretch::process(REALTYPE *smps,int nsmps)
outfft->freq2smp();
//make the output buffer
REALTYPE tmp=(float)(1.0/(float) bufsize*M_PI);
REALTYPE tmp=(float)(1.0/(float) bufsize*c_PI);
REALTYPE hinv_sqrt2=0.853553390593f;//(1.0+1.0/sqrt(2))*0.5;
REALTYPE ampfactor=2.0f;

4
Source/PS_Source/globals.h
View File

@ -61,9 +61,7 @@ inline String formatted(Args... args)
#define NULL 0
#endif
#ifndef M_PI
#define M_PI 3.14159265359
#endif
const double c_PI = 3.14159265359;
const int g_maxnumoutchans = 32;