EP 1164577 A2 20011219 - Method and apparatus for reproducing speech signals
Title (en)
Method and apparatus for reproducing speech signals
Title (de)
Verfahren und Einrichtung zur Wiedergabe von Sprachsignalen
Title (fr)
Procédé et appareil pour reproduire des signaux de parole
Publication
Application
Priority
- EP 96307741 A 19961025
- JP 27941095 A 19951026
- JP 28067295 A 19951027
Abstract (en)
A method for reproducing speech signals at a controlled speed whereby rate conversion of the time axis may be facilitated, and can be realized by a simplified structure based on the encoded speech data without changing the phoneme. With the speech reproducing method, an encoding unit 2 discriminates whether an input speech signal is voiced or unvoiced. Based on the results of discrimination, the encoding unit 2 performs sinusoidal synthesis and encoding for a signal portion found to be voiced, while performing vector quantization by closed-loop search for an optimum vector for a portion found to be unvoiced using an analysis-by-synthesis method, in order to find encoded parameters. The decoding unit 4 compands the time axis of the encoded parameters obtained every pre-set frames at a period modification unit 3 for modifying the output period of the parameters for creating modified encoded parameters associated with different time points corresponding to the pre-set frames. A speech synthesis unit 6 synthesizes the voiced speech portion and the unvoiced speech portion based on the modified encoded parameters. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/02 (2006.01); G10L 21/04 (2006.01)
CPC (source: EP)
G10L 19/02 (2013.01); G10L 21/04 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01121724 A 19961025