Transmission system with speech encoder with improved pitch dete

Details Transmission system with speech encoder with improved pitch dete Transmission system with speech encoder with improved pitch dete

1996-05-10

1999-10-05

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704216, G10L 908

Patent

active

059638958

ABSTRACT:
A transmission system contains a speech coder which utilizes a pitch detector that is arranged to select a characteristic auxiliary signal portion from the signal to be coded in order to improve the quality of the pitch detection. The pitch is found by searching in the speech signal for signal portions that correspond to the characteristics auxiliary signal portion and by calculating the time difference between the respective signal portions.

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"An accurate pitch detection algorithm", Y. Medan et al., 9th International Conference on Pattern Recognition, vol. 1, pp. 476-480, see pp. 476-479.
"Super resolution pitch determination of speech signals", Y. Medan et al, IEEE Trans. on Acoustics, Speech and signal processing, vol. ASSP-39, No. 1, 1991, pp. 40-48, see pp. 42-43; Introduction.

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