Spectrum.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  Spectrum.h
 
  Dominic Mazzoni
 
**********************************************************************/
 
#ifndef __AUDACITY_SPECTRUM__
#define __AUDACITY_SPECTRUM__
 
#include "FFT.h"
 
/*
  This function computes the power (mean square amplitude) as
  a function of frequency, for some block of audio data.
 
  width: the number of samples
  calculates windowSize/2 frequency samples
*/
 
MATH_API
bool ComputeSpectrum(const float * data, size_t width, size_t windowSize,
                     double rate, float *out, bool autocorrelation,
                     int windowFunc = eWinFuncHann);
 
#endif