CPC H04S 7/301 (2013.01) [H04R 5/04 (2013.01); H04R 2420/07 (2013.01)] | 20 Claims |
1. A multi-channel audio system, comprising:
a multi-channel audio device configured to reproduce a multi-channel audio signal through use of a plurality of speakers;
an acoustic profile information generating device configured to generate acoustic profile information to be set in the multi-channel audio device; and
a wireless recording and reproducing device configured to cooperate with the acoustic profile information generating device, the wireless recording and reproducing device being placed at a listening point of the multi-channel audio device,
wherein the wireless recording and reproducing device includes:
channel reproduction data recording means for enabling, when a test signal reproducing instruction accompanied by designation of a channel is received from the multi-channel audio device, a microphone provided to or connected to the own wireless recording and reproducing device to start sound collection, and recording, as channel reproduction data on the designated channel, a test signal output from the multi-channel audio device through one of the plurality of speakers corresponding to the designated channel;
source sound reproduction data recording means for reproducing, when the test signal reproducing instruction is received, a source sound of the test signal, which is stored in advance, in synchronization with the start of the sound collection by the microphone, and recording reproduced data on the source sound as source sound reproduction data without externally outputting the reproduced data; and
measurement data transmission means for transmitting, to the acoustic profile information generating device, measurement data on the designated channel, which includes the channel reproduction data on the designated channel, which has been recorded by the channel reproduction data recording means, and the source sound reproduction data recorded by the source sound reproduction data recording means,
wherein the acoustic profile information generating device includes:
measurement data receiving means for receiving the measurement data on the designated channel from the wireless recording and reproducing device;
measurement means for comparing the channel reproduction data and the source sound reproduction data that are included in the measurement data on the designated channel, which has been received by the measurement data receiving means, to each other to measure a delay time and an attenuation rate of the channel reproduction data on the designated channel with respect to the source sound reproduction data;
acoustic profile information generating means for generating acoustic profile information on the designated channel, which includes a reproduction timing and a volume level, based on the delay time and the attenuation rate of the channel reproduction data on the designated channel with respect to the source sound reproduction data, which have been measured by the measurement means; and
acoustic profile information transmitting means for transmitting the acoustic profile information on the designated channel, which has been generated by the acoustic profile information generating means, to the multi-channel audio device, and
wherein the multi-channel audio device includes:
acoustic profile information receiving means for receiving the acoustic profile information on the designated channel from the acoustic profile information generating device;
acoustic profile information setting means for setting the acoustic profile information on the designated channel, which has been received by the acoustic profile information receiving means, as a reproduction condition for an audio signal of the designated channel;
test signal reproduction instruction means for transmitting, based on a test signal reproducing operation received from a user, the test signal reproducing instruction accompanied by the designation of the channel to the wireless recording and reproducing device; and
test signal reproduction means for reproducing, based on the test signal reproducing operation, the source sound of the test signal, which is stored in advance, and outputting the source sound from the one of the plurality of speakers corresponding to the designated channel.
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