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1. (WO2003063136) CONVERSION SCHEME FOR USE BETWEEN DTX AND NON-DTX SPEECH CODING SYSTEMS

Pub. No.:    WO/2003/063136    International Application No.:    PCT/US2002/039969
Publication Date: Jul 31, 2003 International Filing Date: Dec 13, 2002
IPC: G10L 19/14
H04W 88/18
Applicants: CONEXANT SYSTEMS, INC.
BENYASSINE, Adil
SHLOMOT, Eyal
SU, Huan-Yu
Inventors: BENYASSINE, Adil
SHLOMOT, Eyal
SU, Huan-Yu
Title: CONVERSION SCHEME FOR USE BETWEEN DTX AND NON-DTX SPEECH CODING SYSTEMS
Abstract:
Method for converting a speech signal between DTX and non-DTX devices wherein a frame of a first speech signal comprising a plurality of frames encoded at a plurality of first rates, including a first non-speech rate, is received (524). The rate of the received frame is determined (526), and if the received frame is encoded at the first non-speech rate (528), then the received frame is re-encoded at either a second or third non-speech rate to generate a frame of a second speech signal (530). Moreover, a system for converting a speech signal comprises a receiver for receiving a frame of a first speech signal and a processor capable of determining the encoding rate of the received frame and re-encoding the received frame at either a second or third non-speech rate if the received frame was originally encoded at a first non-speech rate.