In this paper, we propose a pitch extraction method based on the spectral average magnitude difference function (SAMDF) which is defined as the AMDF of the logmagnitude spectrum of speech. Since the SAMDF is defined on the spectrum of speech signal, the nulls of SAMDF are not affected seriously by the local peaks caused by the additive noise. Furthermore, the proposed method does not need to use any kind of spectral flattening method approach. Experimental result shows that the proposed method is effective for noise-corrupted speech signal and it is adequate for the pitch extraction of female's and child's speech signal.

Keywords: Pitch Extraction, Spectral AMDF