| 54 |
Titel |
TI |
[EN] Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels |
| 71/73 |
Anmelder/Inhaber |
PA |
GRUNDIG AG, NL
|
| 72 |
Erfinder |
IN |
HERBERT BUCHNER, NL
;
WALTER KELLERMANN, NL
|
| 22/96 |
Anmeldedatum |
AD |
25.10.2002 |
| 21 |
Anmeldenummer |
AN |
02826134 |
|
Anmeldeland |
AC |
CN |
|
Veröffentlichungsdatum |
PUB |
20.04.2005 |
33
31
32 |
Priorität |
PRC
PRN
PRD |
DE
10153188
20011027
|
| 51 |
IPC-Hauptklasse |
ICM |
H04B 3/23
|
| 51 |
IPC-Nebenklasse |
ICS |
H04M 9/08
H04R 3/12
|
|
IPC-Zusatzklasse |
ICA |
|
|
IPC-Indexklasse |
ICI |
|
|
Gemeinsame Patentklassifikation |
CPC |
H04M 9/082
H04R 27/00
H04R 3/02
|
|
MCD-Hauptklasse |
MCM |
|
|
MCD-Nebenklasse |
MCS |
H04B 3/23
(2006.01)
H04M 9/08
(2006.01)
H04R 3/02
(2006.01)
|
|
MCD-Zusatzklasse |
MCA |
|
| 57 |
Zusammenfassung |
AB |
[EN] A multichannel full-duplex audio signal transmission system, comprising an adaptive filter ( 2 ) provided for multichannel acoustic echo cancellation. A channel combining device ( 5 ) is provided between the preprocessing units (V 1 , . . . VD) and loudspeakers (L 1 , . . . ,LD), in which several (C>D) loudspeakers can be connected to one and the same preprocessing unit and by means of which the remaining D-C preprocessing units can be separated from the loudspeakers (L 1 , . . , LD). The channel combining device permits an optimization of the convergence ratio of the adaptive adjustment of filter coefficients in said adaptive filter ( 2 ). |
| 56 |
Entgegengehaltene Patentdokumente/Zitate,
in Recherche ermittelt |
CT |
|
| 56 |
Entgegengehaltene Patentdokumente/Zitate,
vom Anmelder genannt |
CT |
|
| 56 |
Entgegengehaltene Nichtpatentliteratur/Zitate,
in Recherche ermittelt |
CTNP |
|
| 56 |
Entgegengehaltene Nichtpatentliteratur/Zitate,
vom Anmelder genannt |
CTNP |
|
|
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