| 摘要 |
A multichannel echo canceller according to the present invention includes an echo cancellation section which receives loudspeaker input signals sp 1 , sp 2 including a second acoustic signal to be respectively inputted to a plurality of loudspeakers 10, 20 provided in a first location and detection signals m 1 , m 2 detected by a plurality of microphones 11, 21 provided in the first location; separates a first acoustic signal and a second acoustic signal, which are included in the detection signals m 1 , m 2 , by performing signal processing based on an independent component analysis; cancels as an echo the second acoustic signal, which is included in the detection signals m 1 , m 2 , by outputting only the separated first acoustic signal to a plurality of loudspeakers 30, 40 provided in a second location.
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