NOISE CANCELLATION MICROPHONES WITH SHARED BACK VOLUME

摘要

NOISE CANCELLATION MICROPHONES WITH SHARED BACK VOLUME A multi-microphone device includes a device package and a plurality of microphones. The device package defines a component cavity and a plurality of vias. The vias comprise openings in the device package extending between the component cavity and an exterior. The microphones are located within the component cavity sharing a back volume in common. The microphones are configured to generate electrical signals in accordance with acoustic pressure in the respective vias. Further, an audio apparatus includes a housing, a speaker and at least two microphones within the housing sharing a back volume in common. A first acoustical conduit extends from a first end in proximity to the first microphone to a first exterior location and a second acoustical conduit extends from a second end in proximity to the second microphone to a second exterior location.