| 摘要 |
PROBLEM TO BE SOLVED: To provide an echo suppressor which can reduce the influence of a distortion property of a speaker in echo suppression and can send the voice of the near-end speaker with little suppression. SOLUTION: The echo suppressor comprises the speaker 103; echo collection microphone 101 which is arranged close to the speaker 103, and outputs an input voice as an echo signal; microphones 102a1-102am for near-end sound collection which are arranged close to the speaker, and output an input voice as a speaker voice signal; delay devices 104a1-104am which delay the echo signal and output an echo delayed signal; attenuators 105a1-105am which attenuate the echo delayed signal and output an echo delayed and attenuated signal; and subtractors 106a1-106am which subtract the echo delayed and attenuated signal from the speaker voice signal. COPYRIGHT: (C)2008,JPO&INPIT
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