Title:
LOUDSPEAKER APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/220687
Kind Code:
A1
Abstract:
Provided is a loudspeaker apparatus. The apparatus comprises: a loudspeaker sound emission unit, comprising a loudspeaker diaphragm, wherein the loudspeaker sound emission unit is used for converting an electric signal into a sound signal by means of the loudspeaker diaphragm; a horn, wherein the horn comprises a sound inlet and a sound outlet, the loudspeaker sound emission unit is arranged on the sound inlet, and the horn is used for amplifying the sound signal and then propagating same out through the sound outlet; and a phase plug for performing phase and/or amplitude adjustment on the sound signal from the sound inlet, wherein the relative positions of the loudspeaker diaphragm and the phase plug are constant to form an incompressible air cavity. By means of the present application, the impedance of a loudspeaker apparatus itself matches the radiation impedance, in a propagating space, of a sound of the loudspeaker apparatus, and the radiation impedance, in the propagating space, of the sound of the loudspeaker apparatus is increased, such that the radiation efficiency of the loudspeaker is improved, and an output of a sound signal of the loudspeaker apparatus at a high frequency is increased.
Inventors:
SUN KUNMAO (CN)
ZHANG YUMIN (CN)
ZHANG YUMIN (CN)
Application Number:
PCT/CN2019/124904
Publication Date:
November 05, 2020
Filing Date:
December 12, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04R9/02; H04R9/06
Foreign References:
| CN108471577A | 2018-08-31 | |||
| CN106233752A | 2016-12-14 | |||
| CN206728269U | 2017-12-08 | |||
| US20070147647A1 | 2007-06-28 | |||
| CN201920606974U | 2019-04-29 |
Other References:
See also references of EP 3952339A4
Attorney, Agent or Firm:
E-TONE INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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