pitch-detection

this code is with 3 methods

AMDF

Autocorrelation

Cepstrum Analysis

In the self-correlation function method, 2 peaks (numerically large) of the self-correlation function diagram are selected as lag for the estimated peak.
Figure 1: Smoothed curve of points obtained) by Center Clipping method
Figure 2: Candidate points obtained by Center Clipping method
Figure 3: smoothed curve of points obtained (Level Center Clipping method 3)
Figure 4: Candidate points obtained by 3 Level Center Clipping method
Coefficient c for Center Clipping: 0.2
Coefficient c for 3 Level Center Clipping: 0.2
Energy threshold for sound frame detection: 500,000

First Method: AMDF

Second Method: Autocorrelation

Third Method: Cepstrum Analysis