Acoustic vent and protective membrane

1. An in-ear electronic device comprising:

an enclosure that defines an enclosed space surrounding a driver and an acoustic vent to an ambient environment surrounding the enclosure; and

an acoustic frame having an outer surface comprising a first sidewall and a second sidewall coupled to the enclosure and defining an acoustic channel between a back volume chamber of the driver to the acoustic vent.

2. The in-ear electronic device of claim 1 wherein the first sidewall and the second sidewall define a first side and a second side, respectively, of the acoustic channel.

3. The in-ear electronic device of claim 2 wherein the enclosure comprises an inner surface that is coupled to the first sidewall and the second sidewall of the acoustic frame to enclose the acoustic channel.

4. The in-ear electronic device of claim 1 wherein the acoustic channel comprises a length dimension greater than a width dimension of the acoustic channel.

5. The in-ear electronic device of claim 1 wherein the acoustic channel comprises a width dimension greater than a height dimension of the acoustic channel.

6. The in-ear electronic device of claim 1 wherein the acoustic channel comprises at least one curved sidewall.

7. The in-ear electronic device of claim 1 wherein the acoustic channel is tuned to attenuate frequencies greater than 4 kHz.

8. The in-ear electronic device of claim 1 further comprising an acoustic mesh coupled to the acoustic vent.

9. The in-ear electronic device of claim 1 wherein the enclosure comprises a cap portion coupled to a body portion.

10. The in-ear electronic device of claim 9 wherein the cap portion comprises the acoustic vent and further comprises an acoustic opening coupling a front volume chamber of the driver to the ambient environment.

11. An in-ear electronic device comprising:

an enclosure having a cap portion defining an acoustic port and an acoustic vent open to an ambient environment, and a body portion coupled to the cap portion;

a driver positioned within the cap portion and dividing the cap portion into a front volume chamber coupling a sound output face of the driver to the acoustic port and a back volume chamber; and

an acoustic frame coupled to the driver and having an outer surface defining an acoustic channel between the outer surface and an inner surface of the enclosure that couples the back volume chamber of the driver to the acoustic vent for passive attenuation of a desired frequency range.

12. The in-ear electronic device of claim 11 wherein the acoustic frame is positioned within the cap portion.

13. The in-ear electronic device of claim 11 wherein the outer surface comprises a recessed portion formed within the outer surface and a first sidewall and a second sidewall positioned on opposite sides of the recessed portion to define the acoustic channel.

14. The in-ear electronic device of claim 13 wherein the cap portion comprises the inner surface and has a first mating member and a second mating member, and wherein the first mating member and the second mating member mate with the first sidewall and the second sidewall, respectively, to enclose the acoustic channel.

15. The in-ear electronic device of claim 11 wherein the acoustic channel comprises a length dimension that is at least 1.5 times a width dimension of the acoustic channel.

16. The in-ear electronic device of claim 11 wherein the acoustic channel comprises a width dimension that is at least 2.5 times a height dimension of the acoustic channel.

17. The in-ear electronic device of claim 11 wherein the acoustic channel comprises at least one curved sidewall.

18. The in-ear electronic device of claim 11 wherein the acoustic channel is tuned to attenuate frequencies in an ultrasonic range.

19. The in-ear electronic device of claim 11 further comprising an acoustic mesh coupled to the acoustic vent.

20. The in-ear electronic device of claim 11 wherein the cap portion is snap fit to the body portion.