Title:
SPEAKER
Document Type and Number:
WIPO Patent Application WO/2021/000118
Kind Code:
A1
Abstract:
Provided is a speaker, comprising: a basket; and a vibration system and a magnetic circuit system respectively fixed at the basket. The vibration system comprises a vibration diaphragm fixed at the basket and a voice coil driving the vibration diaphragm to vibrate and generate sound. The vibration diaphragm comprises a dome. The dome comprises a first layer and a second layer having a porous structure. The first layer and the second layer are stacked one above the other and fixedly connected together. Compared with the prior art, the speaker of the present invention is provided with a second layer having a porous structure. Since such structure provides enhanced sound damping performance, energy of resonance peaks of a front cavity can be effectively reduced, thereby mitigating distortion while reducing amplification of noise caused by high frequency resonance.
Inventors:
QIU ZHIQIANG (CN)
LIU SHASHA (CN)
LIU SHASHA (CN)
Application Number:
PCT/CN2019/094016
Publication Date:
January 07, 2021
Filing Date:
June 29, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)
International Classes:
H04R31/00; H04R7/02
Foreign References:
| CN205754825U | 2016-11-30 | |||
| CN203219479U | 2013-09-25 | |||
| CN102026060A | 2011-04-20 | |||
| CN208337866U | 2019-01-04 | |||
| US20160330549A1 | 2016-11-10 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYUANLIHE PATENT AND TRADEMARK FIRM (GENERAL PARTNERSHIP) (CN)
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