Formant emphasis method and formant emphasis filter device

Details Formant emphasis method and formant emphasis filter device Formant emphasis method and formant emphasis filter device

1996-09-13

2000-05-16

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Synthesis

704258, G10L 502

Patent

active

060649623

ABSTRACT:
In a formant emphasis method of emphasizing the formant as the spectral peak of an input speech signal and attenuating the spectral valley of the input speech signal, a spectrum emphasis filter performs processing for emphasizing the formant of the input speech signal and attenuating the valley of the input speech signal. A first-order variable characteristic filter whose characteristic adaptively changes in accordance with the characteristic of the input speech signal and a first-order fixed characteristic filter compensate a spectral tilt included in an output signal from the spectrum emphasis filter.

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"Quantization Procedures For The Excitation In Celp Coders," Peter Kroon, et al. Proc. ICASSP; Apr. 1987, pp. 1649-1652.

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