Pitch determination method and apparatus using spectral...

Details Pitch determination method and apparatus using spectral... Pitch determination method and apparatus using spectral...

2002-08-08

2009-02-17

Edouard, Patrick N (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S205000, C704S206000, C084S454000, C084S616000

Reexamination Certificate

active

07493254

ABSTRACT:
A method and apparatus for detecting a pitch using frequency analysis are provided. An externally input digital signal is analyzed into frequency component values at predetermined time intervals, and positions of peaks of the digital signal are detected based on the frequency component values. It is determined whether a frequency at a maximum peak position among the peak positions is a pitch or a n-order harmonic frequency of the pitch to detect a pitch. Then, the range of the pitch is determined based on the range of a harmonic frequency of the detected pitch. Accordingly, an error range for the pitch detected using frequency analysis is minimized, thereby more exactly detecting a pitch when the pitch is detected using the frequency analysis.

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