Systems and methods for suppressing sound leakage
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.
1. A speaker, comprising:
a housing;
a transducer residing inside the housing and configured to generate vibrations, the vibrations producing a sound wave inside the housing and causing a leaked sound wave spreading outside the housing from a portion of the housing, the transducer including a magnetic system for generating a first magnetic field;
at least one sound guiding hole located on the housing and configured to guide the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing, the guided sound wave having a phase different from a phase of the leaked sound wave, the guided sound wave interfering with the leaked sound wave in a target region; and
a magnetic connector configured to charge the speaker when the magnetic connector absorbs a charging interface of an external power source, 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.
2. The speaker of claim 1 , wherein
the insulation base comprises a supporting member and an insertion member,
a cross section of the supporting member is greater than that of the insertion member, and
the magnetic adsorption ring is inserted into an accommodation space formed by the supporting member and the insertion member.
3. The speaker of claim 2 , wherein the magnetic connector further comprises a second housing for accommodating the magnetic adsorption ring and the insulation base.
4. The speaker of claim 3 , wherein
the second housing comprises a body and a flange at an end of the body,
the body is sleeved on the insulation base and the magnetic adsorption ring, and
the flange covers an end of the magnetic adsorption ring.
5. The speaker of claim 4 , wherein an outer circumference wall of the supporting member and an inner circumference wall of the body are mechanically connected via a buckle connection.
6. The speaker of claim 5 , wherein two through grooves are located on two opposite surfaces of an outer peripheral wall of the body, respectively, and the supporting member includes two buckles matching the two through grooves.
7. The speaker of claim 6 , the second housing is sleeved on the supporting member of the insulation base via the buckle connections between the two through grooves and the two buckles.
8. The speaker of claim 1 , wherein
the magnetic adsorption ring has a shape of a circle, and
each of the plurality of terminals has a contract surface that is concentric with the magnetic adsorption ring.
9. The speaker of claim 1 , wherein
the magnetic adsorption ring is rotational symmetry with respect to a rotation center, and
a length of the magnetic adsorption ring along a first direction is different from a length of the magnetic adsorption ring along a second direction, the first direction and the second direction being perpendicular to each other at the rotation center.
10. The speaker of claim 1 , wherein the magnetic adsorption ring includes a plurality of ring sections, pair of adjacent ring sections of the plurality of ring sections have different magnetic polarities at their respective end surfaces.
11. The speaker of claim 1 , wherein the housing includes two mounting holes, and the speaker further includes two fixing components that can insert into the two mounting holes respectively to fix the magnetic connector.
12. The speaker of claim 1 , wherein
the housing includes a bottom or a sidewall; and
the at least one sound guiding hole is located on the bottom or the sidewall of the housing.
13. The speaker of claim 1 , wherein the at least one sound guiding hole includes a damping layer, the damping layer being configured to adjust the phase of the guided sound wave in the target region.
14. The speaker of claim 13 , wherein the damping layer includes tuning paper, tuning cotton, nonwoven fabric, silk, cotton, sponge, or rubber.
15. The speaker of claim 1 , wherein the guided sound wave includes at least two sound waves having different phases.
16. The speaker of claim 15 , wherein the at least one sound guiding hole includes two sound guiding holes located on the housing.
17. The speaker of claim 16 , wherein the two sound guiding holes are arranged to generate the at least two sound waves having different phases to reduce the sound pressure level of the leaked sound wave having different wavelengths.
18. The speaker of claim 1 , wherein at least a portion of the leaked sound wave whose sound pressure level is reduced is within a range of 1500 Hz to 3000 Hz.
19. The speaker of claim 18 , wherein the sound pressure level of the at least a portion of the leaked sound wave is reduced by more than 10 dB on average.