| 摘要 |
PROBLEM TO BE SOLVED: To suppress an echo even in the case that an initial reach channel is unknown. SOLUTION: A de-reverberation apparatus includes: a delay adding unit 41 for generating a delay added signal delayed at least one of a plurality of acoustic signals for only a predetermined delay time; and a de-reverberation processing unit 23<SB>j</SB>which performs de-reverberation processing using the delay added signal. Thus, by adding a delay to an input signal other than a representative channel, the predetermined representative channel can be set as a channel that the acoustic signal first reaches. COPYRIGHT: (C)2010,JPO&INPIT |
