Title:
MULTI-CHANNEL AUDIO SYSTEM, MULTI-CHANNEL AUDIO DEVICE, PROGRAM, AND MULTI-CHANNEL AUDIO PLAYBACK METHOD
Document Type and Number:
WIPO Patent Application WO/2021/192367
Kind Code:
A1
Abstract:
[Problem] To provide a technology capable of comfortably enjoying audio content via multiple channels even in a noisy environment. [Solution] A wireless terminal 3 is disposed at a listening point of a multi-channel audio device 1. The multi-channel audio device 1 plays a multi-channel audio signal as audio playback signals of a plurality of channels, and outputs an audio playback signal for each channel from the corresponding speaker 2, and the wireless terminal 3 collects the environmental sound at the listening point, and transmits the sound collection signal to the multi-channel audio device 1. The multi-channel audio device 1 identifies, as a noise component, the difference between the sound collection signal received from the wireless terminal 3 and the audio playback signals of the plurality of channels output from the plurality of speakers, generates a noise canceling signal with the opposite phase to the noise component, and outputs the noise canceling signal from any speaker 2.
Inventors:
YONEMORI KAZUHIKO (JP)
Application Number:
PCT/JP2020/036941
Publication Date:
September 30, 2021
Filing Date:
September 29, 2020
Export Citation:
Assignee:
D & M HOLDINGS INC (JP)
International Classes:
H04R3/00; G10K11/178; H04S7/00
Foreign References:
| JP2007135094A | 2007-05-31 | |||
| JP2007259391A | 2007-10-04 | |||
| JP2010244053A | 2010-10-28 |
Other References:
See also references of EP 4131999A4
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