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1. (WO2015118643) AUDIO DEVICE

Pub. No.:    WO/2015/118643    International Application No.:    PCT/JP2014/052773
Publication Date: Fri Aug 14 01:59:59 CEST 2015 International Filing Date: Fri Feb 07 00:59:59 CET 2014
IPC: H04R 29/00
H04R 3/00
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: WATANABE, Kyota
渡邊 匡太
Title: AUDIO DEVICE
Abstract:
Disclosed is an audio device wherein: values of currents flowing in output terminals of amplifying circuits (4a, 4b) are compared with each other when same phase and opposite phase detection signals are outputted to the amplifying circuits (4a, 4b), respectively; and on the basis of results of the comparison, whether a subwoofer (3) is connected or not is determined on the basis of determination data obtained by associating magnitude relationship of the values of the currents with whether the subwoofer (3) is connected or not with respect to the output terminals of the amplifying circuits (4a, 4b), said currents flowing in the output terminals of the amplifying circuits (4a, 4b) when the same phase and opposite phase detection signals are outputted to the amplifying circuits (4a, 4b), respectively.