This paper deals with the voiced/unvoiced segmentation of natural speech signals and, inside the voiced intervals of these signals, with the determination of the fundamental frequency f0. Our primary motivation of developing the method presented in this paper is to obtain precise f0 information, this both in terms of frequency for relatively fast evolving events, and in terms of time location of these frequential events. The use of a first partial enhancement and of the Analytic Signal extraction techniques allows this. Comparisons with a standard FFT-based method are provided.
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