NOISE CANCELLATION MICROPHONES WITH SHARED BACK VOLUME

摘要

An audio device, in at least one embodiment, includes a device package and a plurality of microphones. The device package defines a component cavity and a plurality of vias including a first via and a second via. The vias comprise openings in the device package extending between the component cavity and an exterior. The microphones are located within the component cavity. The microphones are configured to generate electrical signals in accordance with acoustic pressure in the respective vias. A disclosed audio apparatus includes an apparatus housing and a speaker and one or more noise cancellation microphones within the frame. The speaker includes a speaker diaphragm configured to vibrate in accordance with an audio signal. The apparatus housing may define a speaker cavity configured to mechanically support the speaker diaphragm. In at least one embodiment, the audio apparatus includes a multi-microphone device including a first transducer corresponding to a first via and a second transducer corresponding to a second via. A first acoustical conduit may extend from a first end in proximity to the first via to a first exterior location and a second acoustical conduit may extend from a second end in proximity to the second via to a second exterior location.

主权项

1. A multi-microphone device, comprising:
a device package defining a component cavity and a plurality of vias comprising openings in the device package extending between the component cavity and an exterior of the device package, the plurality of vias including a first via and a second via; a plurality of microphones within the component cavity, the plurality of microphones including a first microphone configured to generate a first electrical signal in accordance with acoustic pressure in the first via and second microphone configured to generate a second electrical signal in accordance with acoustic pressure in the second via; wherein the first microphone and the second microphone share a back volume in common.