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1. WO2000011893 - METHOD AND APPARATUS FOR CONTROL OF VOCODER BYPASS UTILIZING INBAND SIGNALING

Publication Number WO/2000/011893
Publication Date 02.03.2000
International Application No. PCT/US1999/018318
International Filing Date 17.08.1999
Chapter 2 Demand Filed 22.02.2000
IPC
G10L 19/00 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
H04M 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
H04W 88/18 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
18Service support devices; Network management devices
CPC
H04W 88/181
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
18Service support devices; Network management devices
181Transcoding devices; Rate adaptation devices
Applicants
  • MOTOROLA, INC. [US]/[US]
Inventors
  • BROPHY, John, Douglas
  • ASHLEY, James, Patrick
  • PROCTOR, Lee, Michael
  • MARTINOVICH, Krsman
Agents
  • HAAS, Kenneth, A.
Priority Data
09/138,18321.08.1998US
09/229,23012.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR CONTROL OF VOCODER BYPASS UTILIZING INBAND SIGNALING
(FR) COMMANDE DE DERIVATION DE VOCODEUR A SIGNALISATION DANS LA BANDE, ET DISPOSITIF A CET EFFET
Abstract
(EN)
Vocoder (200) bypass is provided using a combination of out-of-band and in-band signaling. In preferred embodiments of the present invention, two signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels is communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.
(FR)
Cette invention porte sur une dérivation de vocodeur (200) fonctionnant avec des signaux dans la bande et des signaux hors de la bande. Des réalisations préférées de l'invention comportent deux canaux de signalisation agencés pour une émission à l'intérieur du signal vocal comprimé. Chacun de ces canaux de signalisation est en communication selon un débit préféré de façon à permettre une détection rapide et fiable des états caractéristiques du mode de fonctionnement de la dérivation du vocodeur, et de façon à synchroniser et à échanger le signal vocal comprimé en mode de fonctionnement dérivation de vocodeur.
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