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Patent Searching and Data


Title:
AUDIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068167
Kind Code:
A1
Abstract:
The present application discloses an audio device that has an inhibitory effect on sound waves emitted by a near-field sound source within a specified range and has an amplification effect on sound waves emitted from a far-field sound source outside the specified range. The audio device includes a first sound wave sensor to receive a sound wave and output a first signal based on the sound wave; a second sound wave sensor to receive the sound wave and output a second signal based on the sound wave; and a signal processing circuit coupled to the first sound wave sensor and the second sound wave sensor to generate an output signal based on the first signal and the second signal, wherein the audio device's near-field sensitivity to a sound wave is substantially lower than its far-field sensitivity to the sound wave.

Inventors:
YAN BINGYAN (CN)
LIAO FENGYUN (CN)
QI XIN (CN)
Application Number:
PCT/CN2019/110430
Publication Date:
April 15, 2021
Filing Date:
October 10, 2019
Export Citation:
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Assignee:
SHENZHEN VOXTECH CO LTD (CN)
International Classes:
H04R3/00
Domestic Patent References:
WO2018089549A12018-05-17
WO2012161781A12012-11-29
Foreign References:
US20110044460A12011-02-24
CN104168529A2014-11-26
CN104427454A2015-03-18
US20090060222A12009-03-05
US20090060222A12009-03-05
Other References:
See also references of EP 4042716A4
Attorney, Agent or Firm:
BEIJING YIFA LAW FIRM (CN)
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