Title:
LOUDSPEAKER AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/104067
Kind Code:
A1
Abstract:
Disclosed in the present invention are a loudspeaker and an electronic device. The loudspeaker comprises a control unit, a vibration system, and a magnetic circuit system having a magnetic gap, wherein the vibration system comprises a diaphragm and a voice coil assembly, and the voice coil assembly comprises a plurality of driving voice coils; the control unit is used for controlling the driving voice coil to be powered on when any driving voice coil moves to a first position in a direction close to the magnetic gap; the control unit is further used for controlling the driving voice coil to be powered off when any driving voice coil moves to a second position in the direction far away from the magnetic gap. Thus, power-on states of the driving voice coils are controlled according to the magnetic field distribution of the loudspeaker, so that the powered-on driving voice coils can be always located in an area where magnetic induction lines are densely distributed, and therefore, power consumption can be reduced, and the acoustic performance of the loudspeaker can also be improved.
Inventors:
WANG JIANJIAN (CN)
XU YANDONG (CN)
XU YANDONG (CN)
Application Number:
PCT/CN2020/128909
Publication Date:
June 03, 2021
Filing Date:
November 16, 2020
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02
Foreign References:
| CN110446144A | 2019-11-12 | |||
| CN111225322A | 2020-06-02 | |||
| CN110856087A | 2020-02-28 | |||
| JP2000244998A | 2000-09-08 | |||
| US20160173988A1 | 2016-06-16 | |||
| CN109495824A | 2019-03-19 |
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