Loudspeaker and method for improving directivity, head-mounted device and method

Patent metadata

Field	Value
Publication number	US-11128945-B2
Application number	US-201616312098-A
Country	US
Kind code	B2
Filing date	Dec 31, 2016
Priority date	Sep 30, 2016
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

The present disclosure discloses a loudspeaker and a method for improving directivity of a sound of a loudspeaker, a head-mounted device and a method for improving a sound effect of a head-mounted device. The loudspeaker comprises: a housing, a magnetic circuit unit that is provided within the housing and is for generating a magnetic force, a voice coil that vibrates by the magnetic force, and a vibrating diaphragm that in response to the vibration of the voice coil vibrates and generates a sound; wherein the loudspeaker further comprises a curved-surface extension structure; the curved-surface extension structure connects to the vibrating diaphragm, and radiating the sound generated by the vibrating diaphragm into a predetermined directivity range.

First claim

What is claimed is:

1. A loudspeaker, comprising: a housing, a magnetic circuit unit that is provided within the housing and is for generating a magnetic force, a voice coil that vibrates by the magnetic force, and a vibrating diaphragm that in response to the vibration of the voice coil vibrates and generates a sound; wherein
the loudspeaker further comprises a curved-surface extension structure; and
the curved-surface extension structure directly attaches to the vibrating diaphragm, and the sound generated by the vibrating diaphragm radiates into a predetermined directivity range via the curved-surface extension structure.

2. A head-mounted device, comprising a micro-controlling unit, wherein the head-mounted device further comprises an even number of the loudspeakers according to claim 1 ; and
the loudspeakers are provided at predetermined positions of the head-mounted device and are symmetrical.

3. The head-mounted device according to claim 2 , wherein the loudspeakers are two loudspeakers, and the two loudspeakers are respectively provided at positions of the head-mounted device that correspond to a left ear and a right ear of a user;
or, the loudspeakers are four loudspeakers, and the four loudspeakers are respectively provided at positions of the head-mounted device that correspond to left front, left rear, right front and right rear of an ear of a user.

4. A method for improving a sound effect of a head-mounted device, wherein the method comprises:
providing symmetrically at predetermined positions of the head-mounted device an even number of loudspeakers, each of the loudspeakers comprises: a housing, a magnetic circuit unit that is provided within the housing and is for generating a magnetic force, a voice coil that vibrates by the magnetic force, and a vibrating diaphragm that in response to the vibration of the voice coil vibrates and generates a sound;
providing a curved-surface extension structure in each loudspeaker;
directly attaching the curved-surface extension structure to the vibrating diaphragm in the corresponding loudspeaker, and radiating the sound generated by the vibrating diaphragm into a predetermined directivity range.

5. The method according to claim 4 , wherein the step of providing symmetrically at predetermined positions of the head-mounted device an even number of the loudspeakers comprises:
providing the loudspeakers respectively at positions of the head-mounted device that correspond to a left ear and a right ear of a user;
or, providing the loudspeakers respectively at positions of the head-mounted device that correspond to left front, left rear, right front and right rear of an ear of a user.

Assignees

• Goertek Inc

Inventors

• Hua Yang
• Wang Ze
• Zhou Hongwei
• Li Dehua

Classifications

• H04R5/02 Primary

  Spatial or constructional arrangements of loudspeakers · CPC title

• H04R1/2811

  for loudspeaker transducers · CPC title

• H04R3/00 Primary

  Circuits for transducers (arrangements for producing a reverberation or echo sound G10K15/08; amplifiers H03F) · CPC title

• H04R9/06

  Loudspeakers · CPC title

• H04R2430/00

  Signal processing covered by H04R, not provided for in its groups · CPC title