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1. (US20090129576) RELAY DEVICE, COMMUNICATION TERMINAL, SIGNAL DECODER, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAM

Office : United States of America
Application Number: 11995718 Application Date: 14.07.2006
Publication Number: 20090129576 Publication Date: 21.05.2009
Publication Kind : A1
Prior PCT appl.: Application Number:JP06314039 ; Publication Number: Click to see the data
IPC:
H04M 3/42
G10L 19/00
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
M
TELEPHONIC COMMUNICATION
3
Automatic or semi-automatic exchanges
42
Systems providing special services or facilities to subscribers
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19
Speech 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
Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Inventors: Yamanashi Tomofumi
Satoh Kaoru
Morii Toshiyuki
Agents: PEARNE & GORDON LLP
Priority Data: 2005208933 19.07.2005 JP
Title: (EN) RELAY DEVICE, COMMUNICATION TERMINAL, SIGNAL DECODER, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAM
Abstract: front page image
(EN)

It is an object of the present invention to provide a relay device, a communication terminal, a signal decoder, a method for processing a signal, and a program for processing a signal, which make it possible to achieve a multi-party communication system capable of preventing a significant deterioration of the quality of a sound obtained by decoding a speech/audio signal without increasing a cost for processing, as compared with the conventional communication terminals, the conventional communication techniques, and the like. The relay device comprises a receiver 11 for receiving information transmitted from a plurality of communication terminals participating in multi-party communications and encoded on a layer basis in a plurality of layers by scalable coding; a reconstruction processor 15 for generating control information used to combine, on a layer basis, the encoded information received by the receiver 11 from the plurality of communication terminals; and an integrator/transmitter 16 for integrating, on a layer basis, the encoded received by the receiver 11 from the plurality of communication terminals in accordance with the control information generated by the reconstruction processor 15.


Also published as:
EP1906387CN101258539WO/2007/010844