Robust pitch extraction in pathological voice based on wavelet and cepstrum

Abstract

This paper proposes a new method for pitch extraction, especially useful for pathological voice, by using the wavelet transform in the frequency domain, and disregarding the upper half signal. In this way the benefits of discrete dyadic wavelet transform are combined and the performance of the cepstral method is dramatically improved. This method can also be used for robust pitch extraction in noisy environments.