| 摘要 |
PROBLEM TO BE SOLVED: To perform suitable echo cancellation processing according to a state of a vehicle. SOLUTION: A handsfree calling device 10 equipped with an echo canceler 121 is disclosed, wherein a control unit 100 receives a request to set parameters to be used by the echo canceler 12 for processing thereof from a user and outputs a reference sound for calculating the parameters from a speaker 170. The parameters are calculated by using the reference sound used for the output and voice data received through a microphone 180, and set in a parameter holding part 122 of the echo canceler 121. COPYRIGHT: (C)2009,JPO&INPIT
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