27 lines
1.2 KiB
C
27 lines
1.2 KiB
C
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/*
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* libmfcc.h - Header for libMFCC
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* Copyright (c) 2010 Jeremy Sawruk
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*
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* This code is released under the MIT License.
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* For conditions of distribution and use, see the license in LICENSE
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*/
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#pragma once
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#define PI 3.14159265358979323846264338327
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// Returns the specified (mth) MFCC
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double GetCoefficient(double* spectralData, unsigned int samplingRate, unsigned int NumFilters, unsigned int binSize, unsigned int m);
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// Compute the normalization factor (For internal computation only - not to be called directly)
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double NormalizationFactor(int NumFilters, int m);
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// Compute the filter parameter for the specified frequency and filter bands (For internal computation only - not the be called directly)
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double GetFilterParameter(unsigned int samplingRate, unsigned int binSize, unsigned int frequencyBand, unsigned int filterBand);
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// Compute the band-dependent magnitude factor for the given filter band (For internal computation only - not the be called directly)
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double GetMagnitudeFactor(unsigned int filterBand);
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// Compute the center frequency (fc) of the specified filter band (l) (For internal computation only - not the be called directly)
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double GetCenterFrequency(unsigned int filterBand);
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