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Title:
ELECTROACOUSTIC CONVERSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/184093
Kind Code:
A1
Abstract:
An electroacoustic conversion apparatus, comprising: a vibration system and a magnetic circuit system having a magnetic gap. The vibration system comprises: a vibration diaphragm (3), a voice coil (4) combined below the vibration diaphragm (3) and suspended in the magnetic gap, and a piezoelectric sheet (2) combined at one side of the vibration diaphragm (3); and a conductive circuit is formed on the vibration diaphragm (3), the conductive circuit comprising a first conductive circuit (100), and the first conductive circuit (100) being connected to the piezoelectric sheet (2) so as to connect a first audio signal input from the outside into the piezoelectric sheet (2) via the first conductive circuit (100). The electroacoustic conversion apparatus has a moving-coil sound production structure and a piezoelectric sound production structure at the same time, and the piezoelectric sheet (2) compensates a high-frequency frequency response of the vibration system, so that an electroacoustic conversion apparatus having a super wideband with good performance is realized.

Inventors:
SHAN LIANWEN (CN)
YANG XINFENG (CN)
WANG HAIRONG (CN)
CUI LONGHAO (CN)
Application Number:
PCT/CN2015/097754
Publication Date:
November 24, 2016
Filing Date:
December 17, 2015
Export Citation:
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Assignee:
GOERTEK INC (CN)
International Classes:
H04R23/02
Foreign References:
CN104869508A2015-08-26
CN201533406U2010-07-21
CN202310082U2012-07-04
CN102281488A2011-12-14
CN204305300U2015-04-29
US20150010173A12015-01-08
CN202799117U2013-03-13
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
北京博雅睿泉专利代理事务所（特殊普通合伙） (CN)
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