Systems and methods for suppressing sound leakage

Patent metadata

Field	Value
Publication number	US-12464299-B2
Application number	US-202318472442-A
Country	US
Kind code	B2
Filing date	Sep 22, 2023
Priority date	Jan 6, 2014
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

First claim

What is claimed is:

1 . An earphone, comprising:
a sound production component including a housing and a transducer, the transducer residing inside the housing and being configured to generate vibrations, the vibrations producing a sound wave inside the housing; and an ear hook, in a wearing state, the ear hook being used to place the sound production component at a position near an ear canal but not blocking the ear canal, wherein the housing is provided with a first sound guiding hole on an inner side surface towards the auricle for guiding the sound wave inside the housing through the first sound guiding hole to the ear canal and to surrounding environment, and a distance between a center of the first sound guiding hole and an upper vertex of the ear hook is in range of 17.5 mm to 27.0 mm.

2 . The earphone of claim 1 , wherein in the wearing state, the housing is at least partially located at an antihelix and a distance from the center of the first sound guiding hole to a lower side surface of the sound production component is in a range of 2.3 mm to 3.6 mm.

3 . The earphone of claim 2 , wherein a distance from the center of the first sound guiding hole to a rear side surface of the sound production component is in a range of 9.5 mm to 15.0 mm.

4 . The earphone of claim 1 , wherein in the wearing state, a ratio of the distance between the center of the first sound guiding hole and the upper vertex of the ear hook to a distance between an upper boundary and a lower boundary of the inner side surface is in a range of 0.95 to 1.55.

5 . The earphone of claim 4 , wherein in the wearing state, a ratio of the distance between the center of the first sound guiding hole and the upper vertex of the ear hook to a distance from the center of the first sound guiding hole to an upper side surface of the sound production component is in a range of 1.19 to 2.50.

6 . The earphone of claim 1 , wherein a distance from the center of the first sound guiding hole to a plane in which the ear hook is located is in a range of 3 mm to 6 mm.

7 . The earphone of claim 1 , wherein a ratio of an area of the first sound guiding hole to an area of the inner side surface is in a range of 0.015 to 0.25.

8 . The earphone of claim 7 , wherein the area of the first sound guiding hole is in a range of 2.87 mm 2 to 46.10 mm 2 .

9 . The earphone of claim 7 , wherein the area of the inner side surface is in a range of 160 mm 2 to 240 mm 2 .

10 . The earphone of claim 1 , wherein a ratio of a long-axis dimension of the first sound guiding hole to a short-axis dimension of the first sound guiding hole is in a range of 1 to 10.

11 . The earphone of claim 10 , wherein a ratio of a long-axis dimension of the first sound guiding hole to a short-axis dimension of the first sound guiding hole is in a range of 2 to 4.

12 . The earphone of claim 1 , wherein the sound wave transmitted to the surrounding environment forms a leaked sound wave in a target region, the housing is further provided with a second sound guiding hole for guiding a sound wave in the target region, the first sound guiding hole and the second sound guiding hole are located on different side walls of the housing, and the guided sound wave of the second sound guiding hole and the leaked sound wave of the first sound guiding hole have different phases.

13 . The earphone of claim 12 , wherein the second sound guiding hole is located on the upper side surface of the housing.

14 . The earphone of claim 12 , wherein the first sound guiding hole or the second sound guiding hole includes a damping layer, the damping layer being configured to adjust the phase of the sound wave of the first sound guiding hole or the second sound guiding hole.

15 . The earphone of claim 14 , wherein the damping layer includes at least one of: a tuning paper, a tuning cotton, a nonwoven fabric, a silk, a cotton, a sponge, or a rubber.

16 . The earphone of claim 12 , wherein a shape of the first sound guiding hole or the second sound guiding hole includes circle, ellipse, quadrangle, rectangle, or linear.

17 . The earphone of claim 12 , wherein the sound production component further includes:
at least one acoustic route coupled to at least one sound guiding hole of the first sound guiding hole or the second sound guiding hole, wherein a guided sound wave of the at least one sound guiding hole is propagated to the at least one sound guiding hole along the acoustic route, and the at least one acoustic route is configured to adjust a frequency of the guided sound wave of the at least one sound guiding hole.

18 . The earphone of claim 17 , wherein the acoustic route is configured to adjust a frequency of the guided sound wave of the at least one sound guiding hole by filtering sound waves in target frequencies.

19 . The earphone of claim 17 , wherein the acoustic route includes one or more lumen structures.

20 . The earphone of claim 17 , wherein the acoustic route includes one or more resonance cavities.

Assignees

• Shenzhen Shokz Co Ltd

Inventors

• Qi Xin
• Liao Fengyun
• Zheng Jinbo
• Chen Qian
• Chen Hao
• Zhang Lei
• Tong Peigeng
• Xie Guolin
• Li Yongjian
• Xu Jiang
• Zhao Tao
• Wu Duoduo
• Ji Ao

Classifications

• G10K11/178

  by electro-acoustically regenerating the original acoustic waves in anti-phase · CPC title

• H04R1/2876

  by means of damping material, e.g. as cladding (damping material for tuning desired resonances H04R1/2807, e.g. in vents H04R1/2823, H04R1/2846) · CPC title

• G10K2210/3216

  Cancellation means disposed in the vicinity of the source · CPC title

• H04R17/00

  Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00}) · CPC title

• G10K11/175

  using interference effects; Masking sound · CPC title