US 2019/0297439 A1Published application

Wireless audio system, controller, wireless speaker, and computer readable system

AssigneeD&M Holdings, Inc.

InventorKoji Maeda

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Abstract

[Problem] In the case where an audio signal of the same source is output from a plurality of speakers, the speakers are adjusted so that the audio signals become optimal at a listening position. [Solution] Processing in which an audio signal output from a wireless speaker 1 is collected by a microphone of a controller 2 carried by a listener and a delay time is measured that is the difference between an output time of the audio signal from the wireless speaker 1 and an input time of the audio signal to the microphone of the controller 2 is performed on a plurality of the wireless speakers 1 that output an audio signal of the same source, and the delay times of the audio signals from these respective wireless speakers 1 are measured. Output timings of these respective wireless speakers 1 are adjusted on the basis of these delay times.

Claims10

Dependent claims

A wireless audio system, comprising a plurality of wireless speakers and a controller configured to remotely operate the plurality of wireless speakers,

wherein the plurality of wireless speakers each include:
test signal output means for outputting a test signal, which is a predetermined audio signal, to notify the controller of an output time of the test signal, or for outputting the test signal at an output time designated in a test instruction, which is received from the controller, in accordance with the test instruction;
and
output adjustment means for adjusting an output timing of an audio signal to be played back in accordance with an output adjustment instruction received from the controller, and
wherein the controller includes:
a microphone configured to collect a sound of the test signal;
measurement means for measuring a delay period, the delay period being a difference between the output time of the test signal received from each of the plurality of wireless speakers or the output time of the test signal designated in the test instruction and an input time of the test signal into the microphone, in which the controller transmits the test instruction to each of the plurality of wireless speakers to cause the each of the plurality of wireless speakers to output the test signal, and to cause the microphone to collect the sound of the test signal, and;
determination means for determining an output timing of each of the plurality of wireless speakers based on the delay period of the each of the plurality of wireless speakers measured by the measurement means;
and
output adjustment instruction transmission means for transmitting, to each of the plurality of wireless speakers, the output adjustment instruction containing designation of the output timing of the each of the plurality of wireless speakers determined by the determination means.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/076,029Filed 13 Sep 2016
Priority: JP 2016-0222608 Feb 2016
Published: 26 Sep 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04R 29/002
For loudspeakers: loudspeaker arrays
H04R 3/12
Circuits for transducers: for distributing signals to two or more loudspeakers
H04S 7/301
Control circuits for electronic adaptation of the sound field: automatic calibration of stereophonic sound system, e.g. with test microphone
H04R 2420/07
Details of connection covered by H04R, not provided for in its groups: applications of wireless loudspeakers or wireless microphones