TimeDomainAnalysisFramework.h

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//=====================================================================================
//=====================================================================================
 
#pragma once
 
#include <vector>
#include <cmath>
 
//=====================================================================================
namespace krotos
{
    class TimeDomainAnalysisFramework
    {
      public:
        //=====================================================================================
        TimeDomainAnalysisFramework(int analysisFrameSize, int sampleRate);
 
        //=====================================================================================
        // Mutators
 
        void setSamplingFrequency(int fs);
 
        // void setSignalFrameTimeDomain(vector<float> signalFrame);
 
        void setSignalEnvelopeSmoothingFactor(float smoothingFactor);
 
        //=====================================================================================
        // Accessors
 
        int getSamplingFrequency();
 
        //=====================================================================================
        // Audio frame processing
 
        void setSignalFrame(std::vector<float> spectralFrame);
 
        //=====================================================================================
        // Energy based methods
 
        float getPeakEnergy();
 
        float getPitchMcLeod();
 
        float getPitchAutocorrelation();
 
        float getRMS();
 
        float getSignalEnvelope();
 
        float getEnergyDifference();
 
      private:
        void initialisePitchTrackingAlgorithms();
 
        int m_samplingFrequency{-1};
 
        int m_signalFrameSize{-1};
 
        std::vector<float> m_signalFrame;
 
        bool m_rmsCalculated;
        float m_rmsValue;
 
        bool m_energyDifferenceCalculated;
        float m_energyDifferenceValue;
        float m_previousEnergyDifferenceValue;
 
        LowpassFilter m_lowpassFilter;
 
        McLeod m_pitchTrackerMcLeod;
        Autocorrelation m_pitchTrackerAutocorrelation;
 
        float m_pitchMcLeod{0.0f};
        float m_pitchAutocorrelation{0.0f};
    };
} // namespace krotos