Microphone assembly having an acoustic coupler

摘要

Embodiments of the invention include a microphone assembly having a microphone soldered on a bottom side of a bottom ported microphone flex circuit carrier, and a rigid coupler soldered on the top side of the carrier, opposite to the microphone. The coupler is inserted into and sealed to a microphone boot made out of a soft material. The top of the boot may be sealed to an electronic audio device into which the assembly is integrated. Acoustic openings through the housing, boot, coupler and carrier allow acoustic signals to reach the microphone. However, the seals between the housing, boot, coupler, carrier and microphone provide sound isolation, as well as a moisture and dust seal between the ambient and the inside of the electronic device. Such seals may include rings, grooves, threads, O-rings between the boot and coupler; or a reinforcing ring around the soft material of the boot.

主权项

1. An electronic device comprising:
a microphone assembly having:
a printed circuit carrier having a first opening;a microphone having an acoustic input port aligned with the first opening and that faces a back side of the carrier;a rigid acoustic coupler having a round outer surface formed around an outer perimeter of the rigid coupler and having a second opening that is aligned with the first opening; and a compliant boot having a round inner surface formed around an inner perimeter of the compliant boot and installed over the outer surface of the rigid acoustic coupler, wherein a seal is formed between the round inner surface of the compliant boot and the round outer surface of the ridged acoustic coupler.