MelFrequencySpectrum.h

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//=====================================================================================
//=====================================================================================
 
#pragma once
 
namespace krotos
{
    class MelFrequencySpectrum
    {
 
      public:
        MelFrequencySpectrum();
 
        void setSamplingFrequency(int fs);
 
        void setParameters(int audioFrameSize, int numCoeffs);
 
        std::vector<float> calculateMelSpectrum(std::vector<float> magnitudeSpectrum);
 
        void buildMelFilterbank();
 
      private:
        static float m_hertzToMel(float f);
        static float m_melToHertz(float m);
 
        int m_numCoefficients;
        int m_fftSize;
        int m_magnitudeSpectrumSize;
        int m_samplingFrequency;
 
        std::vector<std::vector<float>> m_melFilterBank;
    };
} // namespace krotos