A transceiver includes: a TV signal receiving unit for generating a first audio signal from a received broadcast wave; a decoder for decoding a reception signal received from the transceiver, to generate a second audio signal; an adding unit for transmitting the second audio signal to a speaker or adding up and transmit, to the speaker, the first audio signal and the second audio signal, and for outputting a reference signal; and an echo canceller for estimating a pseudo echo component from the reference signal, and cancels the pseudo echo component in a picked-up signal picked up by microphone a sound outputted from the speaker. The adding unit, when the TV signal receiving unit receives the broadcast wave, adds and transmits, to the speaker, the first audio signal and the second audio signal, and outputs a signal resulting from the addition as the reference signal to the echo canceller.