Acoustic output apparatus and methods thereof

Patent metadata

Field	Value
Publication number	US-12133039-B2
Application number	US-202318189493-A
Country	US
Kind code	B2
Filing date	Mar 24, 2023
Priority date	Apr 30, 2019
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

The present disclosure provides an acoustic output apparatus. The acoustic output apparatus may include an acoustic output component and a supporting structure forming an acoustically open structure that allows the acoustic output component to acoustically communicate with the surroundings. The acoustic output component may include a plurality of acoustic drivers, each of which may be configured to output a sound with a frequency range. At least one of the acoustic drivers may include a magnetic system for generating a first magnetic field. The magnetic system may include a first magnetic component for generating a second magnetic field and at least one second magnetic component. A magnetic gap may be formed between the first magnetic component and the at least one second magnetic component. A magnetic field intensity of the first magnetic field in the magnetic gap may be greater than that of the second magnetic field in the magnetic gap.

First claim

What is claimed is:

1. An acoustic output apparatus, comprising:
a speaker assembly including at least one acoustic driver, the at least one acoustic driver being configured to output sound from a pair of sound guiding holes, wherein
the pair of sound guiding holes are located on a same side of a user's ear canal, and
the user's ear canal and one of the pair of sound guiding holes are disposed at one side of a baffle structure, and the other one of the pair of sound guiding holes is disposed at another side of the baffle structure, wherein the baffle structure increases an acoustic route difference between the pair of sound guiding holes to the user's ear canal.

2. The acoustic output apparatus of claim 1 , wherein
the sound includes a first portion outputted from the one of the pair of sound guiding holes and a second portion outputted from the other one of the pair of sound guiding holes, the first portion having an inversed phase with respect to the second portion.

3. The acoustic output apparatus of claim 1 , wherein the at least one acoustic driver comprises:
a first acoustic driver configured to output a first sound with a first frequency range; and
a second acoustic driver configured to output a second sound with a second frequency range, the second frequency range including frequencies higher than the first frequency range.

4. The acoustic output apparatus of claim 3 , wherein the pair of sound guiding holes includes a pair of first sound guiding holes and a pair of second sound guiding holes,
the first sound is outputted from the pair of first sound guiding holes, and
the second sound is outputted from the pair of second sound guiding holes.

5. The acoustic output apparatus of claim 4 , wherein further comprising:
a first acoustic route between the first acoustic driver and the pair of first sound guiding holes; and
a second acoustic route between the second acoustic driver and the pair of second sound guiding holes, wherein the first acoustic route and the second acoustic route have different frequency selection characteristics.

6. The acoustic output apparatus of claim 4 , wherein the first sound guiding holes are spaced apart from each other by a first distance, the second guiding holes are spaced apart from each other by a second distance, and the first distance is greater than the second distance.

7. The acoustic output apparatus of claim 4 , wherein at least one of the pair of second sound guiding holes is closer to the user's ear canal than at least one of the pair of first sound guiding holes.

8. The acoustic output apparatus of claim 4 , wherein the speaker assembly comprises:
a first housing for accommodating the first acoustic driver; and
a second housing for accommodating the second acoustic driver.

9. The acoustic output apparatus of claim 8 , wherein:
the first housing includes a first chamber and a second chamber located on either side of the first acoustic driver, the first chamber being acoustically coupled to one of the pair of first sound guiding holes, the second chamber being acoustically coupled to the other one of the pair of first sound guiding holes.

10. The acoustic output apparatus of claim 8 , wherein:
the second housing includes a third chamber and a fourth chamber located on either side of the second acoustic driver, the third chamber being acoustically coupled to one of the pair of second sound guiding holes, the fourth chamber being acoustically coupled to the other one of the pair of second sound guiding holes.

11. The acoustic output apparatus of claim 3 , wherein the acoustic output apparatus further comprises:
a control device configured to control the first acoustic driver and the second acoustic driver, the control device comprising a frequency division module configured to divide a source signal into:
a low-frequency signal corresponding to the first frequency range for driving the first acoustic driver to output the first sound; and
a high-frequency signal corresponding to the second frequency range for driving the second acoustic driver to output the second sound.

12. The acoustic output apparatus of claim 3 , wherein:
the first acoustic driver comprises a first electro-acoustic transducer,
the second acoustic driver comprises a second electro-acoustic transducer, and
the first electro-acoustic transducer and the second electro-acoustic transducer have different frequency responses.

13. The acoustic output apparatus of claim 1 , further comprising
a supporting structure for supporting the speaker assembly proximate to the user's ear canal.

14. The acoustic output apparatus of claim 13 , wherein the supporting structure comprises:
an ear hook that connects to the speaker assembly and hangs the speaker assembly before the user's ear canal, or
a headband placed over a head of a user when the acoustic output apparatus is worn by the user.

15. The acoustic output apparatus of claim 1 , further comprising:
a magnetic connector configured to charge the acoustic output apparatus when the magnetic connector absorbs a charging interface of an external power source.

16. The acoustic output apparatus of claim 15 , wherein the magnetic connector comprises:
a magnetic adsorption ring;
an insulation base including a plurality of accommodation holes, at least part of the insulation base being inserted into the magnetic adsorption ring; and
a plurality of terminals each of which is accommodated in one of the plurality of accommodation holes.

17. The acoustic output apparatus of claim 1 , wherein the at least one acoustic driver comprises:
a magnetic system for generating a first magnetic field, the magnetic system comprising:
a first magnetic component for generating a second magnetic field; and
at least one second magnetic component surrounding the first magnetic component, a magnetic gap being formed between the first magnetic component and the at least one second magnetic component, a magnetic field intensity of the first magnetic field in the magnetic gap being greater than a magnetic field intensity of the second magnetic field in the magnetic gap.

18. The acoustic output apparatus of claim 1 , wherein the baffle structure is located at different positions between the pair of sound guiding holes.

19. The acoustic output apparatus of claim 1 , wherein the baffle structure is located at a position close to the one of the pair of sound guiding holes that is disposed at the same side of the baffle structure as the user's ear canal.

20. The acoustic output apparatus of claim 1 , wherein the baffle structure is located at a position close to the other one of the pair of sound guiding holes that is disposed at a different side of the baffle structure from the user's ear canal.

Assignees

• Shenzhen Shokz Co Ltd

Inventors

• Zhang Lei
• Fu Junjiang
• Yan Bingyan
• Liao Fengyun
• Qi Xin

Classifications

• H04M1/035

  Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities · CPC title

• G02C11/00

  Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) · CPC title

• H04R1/2811

  for loudspeaker transducers · CPC title

• H04R1/2807

  Enclosures comprising vibrating or resonating arrangements (for the reduction of undesired resonances or vibrations H04R1/2869) · CPC title

• H04R2410/05

  Noise reduction with a separate noise microphone · CPC title