| 摘要 |
PROBLEM TO BE SOLVED: To secure excellent cancelling effect by varying an adjustment value as a parameter exhibiting the cancelling effect of an echo canceler corresponding to the number of active microphones.SOLUTION: In an echo canceler 40 which is connected to a plurality of microphones 3 and a speaker 2 and prevents echo and howling due to acoustic coupling from the speaker 2 to the microphones 3, a register 400 for varying the adjustment value as a parameter exhibiting the cancelling effect corresponding to the number of active microphones 3 is provided. |
