| 摘要 |
PROBLEM TO BE SOLVED: To provide communication equipment capable of suppressing echo by learning transfer characteristics even when a plurality of sounds having different transfer paths are included in a voice signal collected by a microphone.SOLUTION: Communication equipment 100 includes: first and second microphones; a receiver; a speaker; a learning method selection part for selecting the learning method of the transfer characteristics of a received sound to be output from the receiver or a speaker output sound to be output from a speaker on the basis of a first microphone input signal 61; a directivity control part 223 for controlling the directivity of a first microphone 10 on the basis of first and second microphone input signals 61 and 62, and for calculating an input signal from the arrival direction of the received sound or the speaker output sound; a transfer characteristic learning part 222 for learning the transfer characteristics by using the first microphone input signal 61 or the input signal calculated by the directivity control part 223 in accordance with the learning method selected by the learning method selection part; and an echo suppression part 224 for suppressing echo components included in the first microphone input signal 61 by using the learnt transfer characteristics.SELECTED DRAWING: Figure 19 |
