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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.