Improvement of pitch estimation using harmonic wavelet transform

Author

Chisaki, Y. ; Usagawa, T. ; Ebata, M.

Author_Institution

Dept. of Comput. & Sci., Kumamoto Univ., Japan

Volume

1

fYear

1999

fDate

1999

Firstpage

601

Abstract

A pitch detection method for a harmonic signal based on the wavelet transform is proposed. A modified wavelet transform is derived from a general continuous wavelet transform. Errors of pitch estimation obtained by the proposed method are presented. Moreover, the authors examine how the frequency and phase errors in analyzing the wavelet against the observed signal affect the accuracy of the pitch estimation. Furthermore, the pitch estimation is performed for vowels. As a result, the pitch peak power is enhanced. So, the pitch frequency is estimated with ease among candidates for the power power

Keywords

bandlimited signals; harmonic analysis; parameter estimation; signal detection; speech enhancement; wavelet transforms; band-limited speech signal; frequency error; general continuous wavelet transform; generalized harmonic analysis; harmonic signal; harmonic wavelet transform; modified wavelet transform; observed signal; phase error; pitch detection; pitch estimation accuracy; pitch estimation errors; pitch frequency; pitch peak power; speech enhancement; vowels; wavelet analysis; Continuous wavelet transforms; Equations; Frequency estimation; Harmonic analysis; Power harmonic filters; Signal analysis; Signal resolution; Speech analysis; Wavelet analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 99. Proceedings of the IEEE Region 10 Conference

Conference_Location

Cheju Island

Print_ISBN

0-7803-5739-6

Type

conf

DOI

10.1109/TENCON.1999.818486

Filename

818486