Title:
ELECTROACOUSTIC TRANSDUCER AND METHOD FOR CONTROLLING VIBRATION DISPLACEMENT OF VOICE COIL
Document Type and Number:
WIPO Patent Application WO/2019/200715
Kind Code:
A1
Abstract:
Disclosed are an electroacoustic transducer and a method for controlling the vibration displacement of a voice coil. The electroacoustic transducer comprises: a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a central magnet and at least one pair of side coils; the pair of side coils are symmetrically arranged at two sides of the central magnet; a magnetic gap is formed between the central magnet and each of the side coils; a voice coil in the vibration system is suspended in the magnetic gaps; and the voice coil and the side coils are respectively provided with a corresponding working current/voltage. According to the technical solution provided by the embodiments of the present application, some or all side magnets in the magnetic circuit system are substituted by the side coils, and the vibration displacement and the magnetic circuit performance of the voice coil can be adjusted by adjusting the current or voltage introduced into the side coils, so that the BL value of the voice coil tends to be constant, and the electroacoustic transducer tends to be in a linear working state, thereby achieving the aim of reducing distortion.
Inventors:
HAN FEIFEI (CN)
CAO MINGJUN (CN)
ZHANG YIMING (CN)
YANG XINFENG (CN)
CAO MINGJUN (CN)
ZHANG YIMING (CN)
YANG XINFENG (CN)
Application Number:
PCT/CN2018/093363
Publication Date:
October 24, 2019
Filing Date:
June 28, 2018
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02; H04R3/00; H04R9/06
Foreign References:
| CN206851025U | 2018-01-05 | |||
| CN206851025U | 2018-01-05 | |||
| CN106303883A | 2017-01-04 | |||
| CN107682792A | 2018-02-09 | |||
| US20160345114A1 | 2016-11-24 |
Attorney, Agent or Firm:
TEKYRS INTELLECTUAL PROPERTY INC. (CN)
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