LPC speech synthesis using harmonic excitation generator with ph

Details LPC speech synthesis using harmonic excitation generator with ph LPC speech synthesis using harmonic excitation generator with ph

1998-07-13

2000-05-23

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704208, 704219, G10L 302, G10L 914

Patent

active

06067511&

ABSTRACT:
A speech coding system (10) and associated method relies on a speech encoder (15) and a speech decoder (20). The speech decoder (20) includes a harmonic generator (70) which modulates the phase of each generated harmonic with a low frequency, low bandwidth signal to remove the buzzy quality of the speech and to produce natural sounding speech. The amplitude of the phase modulating signal is adjusted in accordance with the harmonic magnitude. For harmonics residing in a spectral valley the amplitude of the modulating signal is relatively large and for harmonics residing near spectral peaks, the amplitude of the modulation signal is relatively small.

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