Patent ID: 8774398

Claim:
A transceiver including at least a speaker and a microphone, the transceiver comprising: a receiving unit configured to receive a broadcast wave and generate a first audio signal from the received broadcast wave; a decoding unit configured to decode a reception signal received from a different transceiver, to generate a second audio signal; an adding unit configured to (i-a) transmit the first audio signal or the second audio signal to the speaker or (i-b) add up and transmit, to the speaker, the first audio signal and the second audio signal, and (ii) output a reference signal; an echo canceller which estimates a pseudo echo component from the reference signal and cancels the pseudo echo component in a picked-up signal obtained by picking up, using the microphone, a sound outputted from the speaker; and a control unit configured to control the adding unit, wherein when the receiving unit is receiving the broadcast wave, the adding unit is configured to add up and transmit, to the speaker, the first audio signal and the second audio signal and output, to the echo canceller, a signal resulting from adding up the first audio signal and the second audio signal as the reference signal, when the receiving unit is receiving the broadcast wave and the different transceiver is receiving a same broadcast wave as the broadcast wave, the control unit is configured to cause the adding unit to: add up and transmit, to the speaker, the first audio signal and the second audio signal; and output, to the echo canceller, the signal resulting from adding up the first audio signal and the second audio signal as the reference signal, and when the receiving unit is receiving the broadcast wave and the different transceiver is receiving a broadcast wave different from the broadcast wave, or when the receiving unit is receiving the broadcast wave and the different transceiver is not receiving a broadcast wave, the control unit is configured to cause the adding unit to: add up and transmit, to the speaker, the first audio signal and the second audio signal; and output the second audio signal to the echo canceller as the reference signal.