audacia/src/Spectrum.h

40 lines
954 B
C

/**********************************************************************
Audacity: A Digital Audio Editor
Spectrum.h
Dominic Mazzoni
**********************************************************************/
#ifndef __AUDACITY_SPECTRUM__
#define __AUDACITY_SPECTRUM__
#include "WaveTrack.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
*/
bool ComputeSpectrum(float * data, int width, int windowSize,
double rate, float *out, bool autocorrelation, int windowFunc=3);
#endif
// Indentation settings for Vim and Emacs and unique identifier for Arch, a
// version control system. Please do not modify past this point.
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// arch-tag: a3211706-7547-4b7a-b970-1ac937be7ace