Acoustic output apparatus
The present disclosure discloses an acoustic output apparatus. The acoustic output apparatus may include at least one acoustic driver. The at least one acoustic driver may generate sound that is output through at least two sound guiding holes. Further, the acoustic output apparatus may include a supporting structure. The supporting structure may be configured to support the at least one acoustic driver. A baffle may be disposed between the at least two sound guiding holes. The baffle may increase an acoustic distance from at least one sound guiding hole of the at least two sound guiding holes to a user's ear.
1. An acoustic output apparatus, comprising:
at least one acoustic driver configured to generate sound that is output through at least two sound guiding holes; and
a supporting structure suitable for wearing on a user's body and configured to support the at least one acoustic driver, wherein a baffle is disposed between the at least two sound guiding holes, the baffle increasing an acoustic distance from at least one sound guiding hole of the at least two sound guiding holes to a user's ear.
2. The acoustic output apparatus of claim 1 , wherein
the at least one acoustic driver includes a vibration diaphragm,
a front side of the vibration diaphragm in the supporting structure is provided with a front chamber for transmitting sound, the front chamber being acoustically coupled with one sound guiding hole of the at least two sound guiding holes, and
a rear side of the vibration diaphragm in the supporting structure is provided with a rear chamber for transmitting sound, the rear chamber being acoustically coupled with another sound guiding hole of the at least two sound guiding holes.
3. The acoustic output apparatus of claim 1 , wherein the at least two sound guiding holes output at least one set of sounds having a phase difference.
4. The acoustic output apparatus of claim 3 , wherein the at east two sound guiding holes output at least one set of sounds with opposite phases.
5. The acoustic output apparatus of claim 1 , wherein the supporting structure is configured such that each of the at least two sound guiding holes is located on a front side of the user's ear.
6. The acoustic output apparatus of claim 5 , wherein the baffle and a connection line between the at least two sound guiding holes form an included angle, the included angle being less than or equal to 90 degrees.
7. The acoustic output apparatus of claim 1 , wherein a distance between the at least two sound guiding holes is less than or equal to 12 cm.
8. The acoustic output apparatus of claim 1 , wherein
the at least two sound guiding holes include a first sound guiding hole and a second sound guiding hole,
the first sound guiding hole and the user's ear are located at one side of the baffle,
the second sound guiding hole is located at another side of the baffle, and
an acoustic distance from the first sound guiding hole to the user's ear is less than an acoustic distance from the second sound guiding hole to the user's ear.
9. The acoustic output apparatus of claim 1 , wherein the at least two sound guiding holes are located on a same side of the user's ear, a ratio of a distance between a sound guiding hole, which is closer to the user's ear, of the at least two sound guiding holes and the user's ear to a distance between the at least two sound guiding holes being less than or equal to 3.
10. The acoustic output apparatus of claim 1 , wherein the at least two sound guiding holes are located on a same side of the user's ear, a ratio of a distance between a sound guiding hole, which is closer to the user's ear, of the at least two sound guiding holes and the user's ear to a distance between the at least two sound guiding holes being less than or equal to 1.
11. The acoustic output apparatus of claim 1 , wherein a ratio of a height of the baffle to a distance between the at least two sound guiding holes is less than or equal to 5.
12. The acoustic output apparatus of claim 1 , wherein a ratio of a height of the baffle to a distance between the at least two sound guiding holes is less than or equal to 3.
13. The acoustic output apparatus of claim 1 , wherein a ratio of a height of the baffle to a distance between the at least two sound guiding holes is less than or equal to 2.
14. 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 at least two sound guiding holes to a height of the baffle is less than or equal to 2.
15. The acoustic output apparatus of claim 1 , wherein the baffle has a plate structure made of acoustic resistance material.
16. The acoustic output apparatus of claim 1 , wherein the baffle is provided with an acoustic structure, the acoustic structure at least partially absorbing sound passing through the baffle.
17. The acoustic output apparatus of claim 1 , wherein the baffle is provided with acoustic resistance material that changes an acoustic impedance of the baffle.
18. The acoustic output apparatus of claim 15 ,
wherein the acoustic resistance material includes at least one of plastic, textile, metal, permeable material, woven material, screen material, mesh material, porous material, particulate material, or polymer material.
19. The acoustic output apparatus of claim 18 ,
wherein the acoustic resistance material has acoustic impedance, the acoustic impedance being in a range of 5-500 MKS Rayleigh.
20. The acoustic output apparatus of claim 1 , wherein
one of the at least two sound guiding holes is located on a side of the supporting structure facing the user's ear, and
another one of the at least two sound guiding holes is located on a side of the supporting structure facing away from the user's ear.