Goodness of pitch

Goodness of Pitch
 
Formal definition: Goodness of pitch is the peak of the derivative-cepstrum calculated for harmonic pitch
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Units are comparable to amplitude and can be converted to dB by subtracting a baseline and converting to log scale (not implemented in current version).

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This is a measure of how periodic the sound is. It only captures the 'goodness' of harmonic pitch, whereas both noisy sounds and pure tones give low values. Noisy sounds, however, also give high entropy.

Therefore the combination of Wiener entropy and goodness of pitch is useful:

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