Method calculateOnsetDetectionFunctionSample

src/OnsetDetectionFunction.cpp:175–259

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//=======================================================================
double OnsetDetectionFunction::calculateOnsetDetectionFunctionSample (double* buffer)
{	
	double odfSample;
		
	// shift audio samples back in frame by hop size
    std::rotate (frame.begin(), frame.begin() + hopSize, frame.end());
	
	// add new samples to frame from input buffer
	int j = 0;
	for (int i = (frameSize - hopSize); i < frameSize; i++)
	{
		frame[i] = buffer[j];
		j++;
	}
		
	switch (onsetDetectionFunctionType)
    {
		case EnergyEnvelope:
        {
            // calculate energy envelope detection function sample
			odfSample = energyEnvelope();
			break;
        }
		case EnergyDifference:
        {
            // calculate half-wave rectified energy difference detection function sample
			odfSample = energyDifference();
			break;
        }
		case SpectralDifference:
        {
            // calculate spectral difference detection function sample
			odfSample = spectralDifference();
			break;
        }
		case SpectralDifferenceHWR:
        {
            // calculate spectral difference detection function sample (half wave rectified)
			odfSample = spectralDifferenceHWR();
			break;
        }
		case PhaseDeviation:
        {
            // calculate phase deviation detection function sample (half wave rectified)
			odfSample = phaseDeviation();
			break;
        }
		case ComplexSpectralDifference:
        {
            // calcualte complex spectral difference detection function sample
			odfSample = complexSpectralDifference();
			break;
        }
		case ComplexSpectralDifferenceHWR:
        {
            // calcualte complex spectral difference detection function sample (half-wave rectified)
			odfSample = complexSpectralDifferenceHWR();
			break;