DocumentCode :
1897387
Title :
An investigation of estimating pitch periods using a non-linear differential operator
Author :
Whitman, Robert K. ; Etter, Delores M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Volume :
2
fYear :
1994
fDate :
31 Oct-2 Nov 1994
Firstpage :
1237
Abstract :
Numerous techniques have been developed to estimate the pitch periods in speech signals. These techniques use a variety of methods in both the time and frequency domains to estimate the pitch periods. An investigation is made into a time domain algorithm which uses a non-linear differential operator developed by Teager (see B. Gold, J. Acoust. Soc. of America, vol.34, no.7, p.916-921, 1962, and vol.46, no.2, pt.2, p.442-448, 1969), called an energy operator, to estimate the pitch period of the speech data. When the energy operator is applied to a voiced speech signal, it produced a signal with enhanced glottal pulses. From this signal, the pitch period is estimated and the resulting pitch track is smoothed. All operations in this algorithm are done in the time domain
Keywords :
frequency estimation; low-pass filters; nonlinear differential equations; smoothing methods; speech enhancement; speech processing; time-domain analysis; energy operator; enhanced glottal pulses; low pass filtering; non-linear differential operator; pitch frequency estimation; pitch periods estimation; pitch track smoothing; speech data; time domain algorithm; time domain operations; voiced speech signal; Data mining; Finite impulse response filter; Frequency domain analysis; Frequency estimation; Low pass filters; Power harmonic filters; Signal processing; Signal processing algorithms; Speech enhancement; Speech processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
ISSN :
1058-6393
Print_ISBN :
0-8186-6405-3
Type :
conf
DOI :
10.1109/ACSSC.1994.471656
Filename :
471656
Link To Document :
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