In-ear audio device with resonator
View Patent ↗Disclosed herein are examples of an in-ear audio device comprising a speaker cavity containing a speaker, a resonator comprising a resonator cavity and a resonator vent, wherein the resonator cavity is in fluid communication with the speaker cavity via the resonator vent, and a microphone comprising a microphone inlet, wherein the speaker cavity is in fluid communication with the microphone inlet via the resonator.
1. An in-ear audio device comprising:
a speaker cavity containing a speaker;
a resonator comprising a resonator cavity and a resonator vent, wherein the resonator cavity is in fluid communication with the speaker cavity via the resonator vent; and
a microphone comprising a microphone inlet, wherein an ear canal is in fluid communication with the microphone, from a port to the speaker cavity, from the speaker cavity to the resonator cavity via the resonator vent to the microphone.
2. In-ear audio device of claim 1 , wherein the resonator vent is in fluid communication with the microphone inlet via the resonator cavity.
3. In-ear audio device according to claim 1 , wherein the resonator cavity and/or the resonator vent contains a damping material.
4. In-ear audio device of claim 3 , wherein the damping material is a foam.
5. In-ear audio device according to claim 1 , wherein the resonator is a Helmholtz resonator.
6. In-ear audio device according to claim 1 , wherein the in-ear audio device comprises a proximal end, a distal end, and an ear canal axis extending between the proximal end and the distal end, the proximal end configured to be closer to an ear drum than the distal end when the in-ear audio device is inserted in an ear of a user, and wherein the microphone is distal to a front speaker cavity proximal to the speaker.
7. In-ear audio device according to claim 1 , wherein the resonator is configured to attenuate sound at one or more frequencies within a frequency range above 5 kHz, such as within a frequency range from 6 kHz to 9 kHz.
8. In-ear audio device according to claim 1 , further comprising a housing, wherein the housing is configured to at least partially contain the speaker, the resonator, and the microphone.
9. In-ear audio device of claim 8 , wherein the speaker cavity comprises the port in the housing.
10. In-ear audio device according to claim 1 , wherein the in-ear audio device is configured to reduce sound amplitude at the ear canal resonance frequency by at least 3 dB.
11. In-ear audio device according to claim 1 , wherein the resonator is configured to act as a notch filter.