Acoustic output apparatus
The present disclosure discloses an acoustic output apparatus including at least one acoustic driver, a controller, and a supporting structure. The at least one acoustic driver may be configured to output sounds through at least two sound guiding holes. The at least two sound guiding holes may include a first sound guiding hole and a second sound guiding hole. The controller may be configured to control a phase and an amplitude of the sounds generated by the at least one acoustic driver using a control signal such that the sounds output by the at least one acoustic driver through the first and second sound guiding holes have opposite phases. The supporting structure may be provided with a baffle and configured to support the at least one acoustic driver such that the first and second sound guiding holes are located on both sides of the baffle.
1. An acoustic output apparatus, comprising:
at least one acoustic driver configured to output sounds through at least two sound guiding holes, the at least two sound guiding holes including a first sound guiding hole and a second sound guiding hole;
a controller configured to control a phase and an amplitude of the sounds generated by the at least one acoustic driver using a control signal such that the sounds output by the at least one acoustic driver through the first and second sound guiding holes have opposite phases; and
a supporting structure provided with a baffle, the supporting structure being configured to support the at least one acoustic driver such that the first and second sound guiding holes are located on both sides of the baffle.
2. The acoustic output apparatus of claim 1 , wherein
the at least one acoustic driver includes a vibration diaphragm,
a first side of the vibration diaphragm in the supporting structure is provided with a first chamber for transmitting sound, the first chamber being acoustically coupled with the first sound guiding hole, and
a second side of the vibration diaphragm in the supporting structure is provided with a second chamber for transmitting sound, the second chamber being acoustically coupled with the second sound guiding hole.
3. The acoustic output apparatus of claim 2 , wherein a first acoustic route from the vibration diaphragm to the first sound guiding hole is different from a second acoustic route from the vibration diaphragm to the second sound guiding hole.
4. The acoustic output apparatus of claim 3 , wherein a ratio of a length of the first acoustic route to a length of the second acoustic route is 0.5-2.
5. The acoustic output apparatus of claim 1 , wherein the sounds output from the first and second sound guiding holes have different sound pressure amplitudes.
6. The acoustic output apparatus of claim 1 , wherein the at least one acoustic driver includes a first acoustic driver and a second acoustic driver, and
the controller is configured to control the first acoustic driver to output a first sound through the first sound guiding hole and the second acoustic driver to output a second sound from the second sound guiding hole, the first sound and the second sound having opposite phases.
7. The acoustic output apparatus of claim 6 , wherein a first acoustic route from the first acoustic driver to the first sound guiding hole is different from a second acoustic route from the second acoustic driver to the second sound guiding hole.
8. The acoustic output apparatus of claim 7 , wherein a ratio of the first acoustic route from the first acoustic driver to the first sound guiding hole and the second acoustic route from the second acoustic driver to the second sound guiding hole is 0.5-2.
9. The acoustic output apparatus of claim 6 , wherein the first sound and the second sound have different sound pressure amplitudes.
10. The acoustic output apparatus of claim 1 , wherein a distance between the first sound guiding hole and the second sound guiding hole is less than or equal to 12 centimeters.
11. The acoustic output apparatus of claim 1 , wherein
the first sound guiding hole and a user's ear are located on one side of the baffle,
the second sound guiding hole is located on the other side of the baffle, and
a length of an acoustic route from the first sound guiding hole to the user's ear is less than a length of an acoustic route from the second sound guiding hole to the user's ear.
12. The acoustic output apparatus of claim 1 , wherein the first and second sound guiding holes are located on a same side of a user's ear,
a ratio of a distance between the user's ear and a sound guiding hole that is closer to the user's ear among the first and second sound guiding holes to a distance between the first and second sound guiding holes is less than or equal to 3.
13. The acoustic output apparatus of claim 1 , wherein the first and second sound guiding holes are located on a same side of a user's ear,
a ratio of a distance between the user's ear and a sound guiding hole that is closer to the user's ear among the first and second sound guiding holes to a distance between the first and second sound guiding holes is less than or equal to 1.
14. The acoustic output apparatus of claim 1 , wherein the first and second sound guiding holes are located on a same side of a user's ear,
a ratio of a distance between the user's ear and a sound guiding hole that is closer to the user's ear among the first and second sound guiding holes to a distance between the first and second sound guiding holes is less than or equal to 0.9.
15. The acoustic output apparatus of claim 1 , wherein the first and second sound guiding holes are located on a same side of a user's ear,
a ratio of a distance between the user's ear and a sound guiding hole that is closer to the user's ear among the first and second sound guiding holes to a distance between the first and second sound guiding holes is less than or equal to 0.6.
16. The acoustic output apparatus of claim 1 , wherein a ratio of a height of the baffle to a distance between the first and second sound guiding holes is less than or equal to 5.
17. The acoustic output apparatus of claim 1 , wherein a ratio of a distance between a center of the baffle and a connection line between the first and second sound guiding holes to a height of the baffle is less than or equal to 2.
18. The acoustic output apparatus of claim 1 , wherein the at least two sound guiding holes include a third sound guiding hole and a fourth sound guiding hole, and
a ratio of a distance between the third sound guiding hole and the baffle to a distance between the fourth sound guiding hole and the baffle is less than or equal to 2/3.