| 发明名称 |
DEVICE AND METHOD FOR MULTICHANNEL ACOUSTIC ECHO CANCELLATION WITH A VARIABLE NUMBER OF CHANNELS |
| 摘要 |
The present invention relates to a multichannel full-duplex audio signal transmission system, comprising an adaptative filter (2) provided for the multichannel acoustic echo cancellation. According to said invention, a channel combining device (5) is provided between preprocessing units (V1, ..., VD) and loudspeakers (L1, ..., 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 (L1, ..., LD). Said channel combining device permits an optimization of the convergence ratio of the adaptative adjustment of filter coefficients in said adaptative filter (2). |
| 申请公布号 |
WO03039115(A2) |
申请公布日期 |
2003.05.08 |
| 申请号 |
WO2002EP11934 |
申请日期 |
2002.10.25 |
| 申请人 |
GRUNDIG AKTIENGESELLSCHAFT;BUCHNER, HERBERT;KELLERMANN, WALTER |
发明人 |
BUCHNER, HERBERT;KELLERMANN, WALTER |
| 分类号 |
H04B3/23;H04M9/08;H04R3/02 |
主分类号 |
H04B3/23 |
| 代理机构 |
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