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Update from personal repository.

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* Added an initial "formant preservation" option when pitch shifting
 * Real-time pitch shifting now uses a faster method by default, with
   less variation in CPU usage
 * The code is more amenable to compiler auto-vectorization (through
   e.g. gcc --ftree-vectorize).
This commit is contained in:
Chris Cannam
2008-05-22 16:54:27 +00:00
parent 52a10829ef
commit 1d41c952e8
51 changed files with 3157 additions and 676 deletions
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28
src/FFT.h
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@@ -3,7 +3,7 @@
/*
Rubber Band
An audio time-stretching and pitch-shifting library.
Copyright 2007 Chris Cannam.
Copyright 2007-2008 Chris Cannam.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
@@ -15,6 +15,8 @@
#ifndef _RUBBERBAND_FFT_H_
#define _RUBBERBAND_FFT_H_
#include "sysutils.h"
namespace RubberBand {
class FFTImpl;
@@ -36,22 +38,24 @@ class FFT
public:
enum Exception { InvalidSize };
FFT(unsigned int size); // may throw InvalidSize
FFT(int size, int debugLevel = 0); // may throw InvalidSize
~FFT();
void forward(double *realIn, double *realOut, double *imagOut);
void forwardPolar(double *realIn, double *magOut, double *phaseOut);
void forwardMagnitude(double *realIn, double *magOut);
void forward(const double *R__ realIn, double *R__ realOut, double *R__ imagOut);
void forwardPolar(const double *R__ realIn, double *R__ magOut, double *R__ phaseOut);
void forwardMagnitude(const double *R__ realIn, double *R__ magOut);
void forward(float *realIn, float *realOut, float *imagOut);
void forwardPolar(float *realIn, float *magOut, float *phaseOut);
void forwardMagnitude(float *realIn, float *magOut);
void forward(const float *R__ realIn, float *R__ realOut, float *R__ imagOut);
void forwardPolar(const float *R__ realIn, float *R__ magOut, float *R__ phaseOut);
void forwardMagnitude(const float *R__ realIn, float *R__ magOut);
void inverse(double *realIn, double *imagIn, double *realOut);
void inversePolar(double *magIn, double *phaseIn, double *realOut);
void inverse(const double *R__ realIn, const double *R__ imagIn, double *R__ realOut);
void inversePolar(const double *R__ magIn, const double *R__ phaseIn, double *R__ realOut);
void inverseCepstral(const double *R__ magIn, double *R__ cepOut);
void inverse(float *realIn, float *imagIn, float *realOut);
void inversePolar(float *magIn, float *phaseIn, float *realOut);
void inverse(const float *R__ realIn, const float *R__ imagIn, float *R__ realOut);
void inversePolar(const float *R__ magIn, const float *R__ phaseIn, float *R__ realOut);
void inverseCepstral(const float *R__ magIn, float *R__ cepOut);
// Calling one or both of these is optional -- if neither is
// called, the first call to a forward or inverse method will call