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https://github.com/cookiengineer/audacity
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bdc2839112
Create WaveTrackCache as a utility class but don't use it anywhere yet. The possible minor performance problem with effects is fixed by changes in WaveTrack::GetBestBlockSize().
30 lines
719 B
C
30 lines
719 B
C
/**********************************************************************
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Audacity: A Digital Audio Editor
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Spectrum.h
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Dominic Mazzoni
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**********************************************************************/
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#ifndef __AUDACITY_SPECTRUM__
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#define __AUDACITY_SPECTRUM__
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#include "WaveTrack.h"
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#include "FFT.h"
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/*
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This function computes the power (mean square amplitude) as
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a function of frequency, for some block of audio data.
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width: the number of samples
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calculates windowSize/2 frequency samples
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*/
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bool ComputeSpectrum(const float * data, int width, int windowSize,
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double rate, float *out, bool autocorrelation,
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int windowFunc = eWinFuncHanning);
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#endif
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