Audio processing apparatus

摘要

In an audio processing apparatus of the present invention, one or two audio signals selected from a surround rear left audio signal, a left outer audio signal and a left upper audio signal is (are) amplified to be outputted from a speaker terminal(s) corresponding to this (these) channel(s) without necessity to provide amplifiers of all channels. When the surround rear left audio signal is included, a switch S13a is turned ON to supply the surround rear left audio signal amplified by an amplifier 12a to a SP terminal 14a. When the left outer audio signal is included, a switch 13b is turned ON to supply the left outer audio signal amplified by the amplifier 12a to a SP terminal 14b, or a switch 13c is turned ON to supply the left outer audio signal amplified by an amplifier 12b to the SP terminal 14b. When the left upper audio signal is included, a switch 13d is turned ON to supply the left upper audio signal amplified by the amplifier 12b to a SP terminal 14c.

主权项

1. An audio processing apparatus comprising:
a first amplifying unit that amplifies a first extended audio signal or a second extended audio signal, the first extended audio signal being a first extended left audio signal or a first extended right audio signal, and the second extended audio signal being a second extended left audio signal or a second extended right audio signal; a second amplifying unit that amplifies a second extended audio signal or a third extended audio signal, the third extended audio signal being a third extended left audio signal or a third extended right audio signal; a first speaker terminal that outputs the first extended audio signal; a second speaker terminal that outputs the second extended audio signal; a third speaker terminal that outputs the third extended audio signal; a first switch that performs switching as to whether or not the first extended audio signal from the first amplifying unit is to be supplied to the first speaker terminal; a second switch that performs switching as to whether or not the second extended audio signal from the first amplifying unit is to be supplied to the second speaker terminal; a third switch that performs switching as to whether or not the second extended audio signal from the second amplifying unit is to be supplied to the second speaker terminal; a fourth switch that performs switching as to whether or not the third extended audio signal from the second amplifying unit is to be supplied to the third speaker terminal; a channel determining unit that determines which of the first extended audio signal, the second extended audio signal, and the third extended audio signal is included in multichannel audio data; and a switching control unit that if it is determined that the first extended audio signal is included, causes the first switch to supply the first extended audio signal amplified by the first amplifying unit to the first speaker terminal, if it is determined that the second extended audio signal is included, causes the second switch to supply the second extended audio signal amplified by the first amplifying unit to the second speaker terminal, or causes the third switch to supply the second extended audio signal amplified by the second amplifying unit to the second speaker terminal, and if it is determined that the third extended audio signal is included, causes the fourth switch to supply the third extended audio signal amplified by the second amplifying unit to the third speaker terminal.