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Onset Detection

Get Energy Difference

Calculate the energy difference between current and previous energy sum.

Get Spectral Difference

Calculate the spectral difference between the current and the previous magnitude spectrum.

Get Spectral Difference HWR

Calculate the half wave rectified spectral difference between the current and the previous magnitude spectrum.

Get Complex Spectral Difference

Calculate the complex spectral difference from the real and imaginary parts of the FFT.

Get High Frequency Content

Calculate the high frequency content onset detection function from the magnitude spectrum.