Title:
AUDIO PLAYBACK APPARATUS AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/072383
Kind Code:
A1
Abstract:
Disclosed are an audio playback apparatus and device. The audio playback apparatus comprises a loudspeaker, a loudspeaker container, and a cavity expansion material. The loudspeaker and the cavity expansion material are provided in the loudspeaker container. The cavity expansion material is a fabric made of fibers comprising irregular apertures on the surface. Apertures are formed among fibers of the fabric. By providing a fabric made of fibers comprising irregular apertures on the surface in the audio playback apparatus, the gaps among fibers of the fabric and the irregular apertures on the surface of the fibers can decrease the resonant frequency f0 of the audio playback apparatus and increase the frequency band width when the audio playback apparatus plays audio.
Inventors:
SUN ZHENGBIN (CN)
REN YANHUI (CN)
YU LIGANG (CN)
SHAN HAIBO (CN)
HAN MEIMEI (CN)
REN YANHUI (CN)
YU LIGANG (CN)
SHAN HAIBO (CN)
HAN MEIMEI (CN)
Application Number:
PCT/CN2017/076330
Publication Date:
April 26, 2018
Filing Date:
March 10, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04R9/06
Foreign References:
| CN101317498A | 2008-12-03 | |||
| CN203276833U | 2013-11-06 | |||
| CN201594903U | 2010-09-29 | |||
| EP2333766A1 | 2011-06-15 | |||
| CN201610905803A | 2016-10-17 | |||
| CN201611018757A | 2016-11-18 |
Other References:
See also references of EP 3522563A4
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