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Machine translation
1. (WO1979000901) PREDICTIVE SPEECH SIGNAL CODING WITH REDUCED NOISE EFFECTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000901    International Application No.:    PCT/US1979/000197
Publication Date: 15.11.1979 International Filing Date: 28.03.1979
IPC:
G10L 19/04 (2006.01), G10L 19/06 (2006.01), H03M 3/04 (2006.01), H04B 14/04 (2006.01)
Applicants:
Inventors:
Priority Data:
894329 07.04.1978 US
Title (EN) PREDICTIVE SPEECH SIGNAL CODING WITH REDUCED NOISE EFFECTS
(FR) CODIFICATION A PREDICTION DE SIGNAUX VOCAUX AVEC EFFETS DE BRUIT REDUIT
Abstract: front page image
(EN)A predictive speech signal processor features an adaptive filter (120) in a feedback network (137) around the quantizer (111). The adaptive filter (120) essentially combines the quantizing error signal, the formant related prediction parameter signals and the difference signal to concentrate the quantizing error noise in spectral peaks corresponding to the time-varying formant portions of the speech spectrum so that the quantizing noise is masked by the speech signal formants.
(FR)Un processeur de signaux vocaux a prediction comporte un filtre d"adaptation (120) dans un reseau a reaction (137) autour du quantificateur (111). Le filtre (120) combine essentiellement le signal d"erreur de quantification, les signaux parametres de prediction associes aux "formants" et le signal de difference pour concentrer le bruit d"erreur de quantification dans les cretes spectrales correspondant aux portions de "formants" a temps variable du spectre de conversation de sorte que le bruit de quantification soit couvert par les "formants" des signaux vocaux.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)