COMMUNICATION TERMINAL AND COMMUNICATION METHOD

摘要

The disclosed communication terminal (100), which communicates an audio signal, is provided with: a decoder (120) that generates an output audio signal by decoding an input bitstream received from another communication terminal, and that outputs the generated output audio signal to a speaker; an echo canceller (130) that acquires an input audio signal acquired by means of a microphone (102) installed in the space where the speaker (101) is outputting sound, and for each sub-band, eliminates echo components that are included in the acquired audio signal and that correspond to the output audio signal, thereby generating a transmission audio signal; an encoder (140) that generates an output bitstream by encoding the transmission audio signal, and transmits the generated output bitstream to another communication terminal; and a control unit (110) that controls echo-cancelling processing performance for each sub-band in accordance with a replay band of at least one of the output audio signal and the transmission audio signal.