公开(公告)号：US11438682B2

公开(公告)日：2022-09-06

申请号：US17274732

申请日：2019-09-10

Applicant: Knowles Electronics, LLC

Inventor： Adam Abed ,  Edwin Cordon ,  Niel Warren ,  Donald Sanders ,  Maulik Patel ,  Dushyant Liya

IPC: H04R3/00 ,  H04R1/08 ,  G06F3/00 ,  G06F3/05 ,  G06F3/16

Abstract: A microphone assembly includes a housing including a base, a cover, and a sound port. The microphone assembly further includes an acoustic transducer and an electrical circuit, both of which are disposed in an enclosed volume of the housing. The transducer and electrical circuit work in concert to convert sound waves into a processed digital audio signal. The electrical circuit is configured to process digital data in a series of frames that correspond to a fixed period in time. The electrical circuit is further configured to reduce noise in the resulting signal by varying the current draw required in a randomized or pseudo-randomized fashion between adjacent frames of digital data.

公开(公告)号：US20210352391A1

公开(公告)日：2021-11-11

申请号：US17274732

申请日：2019-09-10

Applicant: Knowles Electronics, LLC

Inventor： Adam Abed ,  Edwin Cordon ,  Niel Warren ,  Donald Sanders ,  Maulik Patel ,  Dushyant Liya

IPC: H04R1/08

Abstract: A microphone assembly includes a housing including a base, a cover, and a sound port. The microphone assembly further includes an acoustic transducer and an electrical circuit, both of which are disposed in an enclosed volume of the housing. The transducer and electrical circuit work in concert to convert sound waves into a processed digital audio signal. The electrical circuit is configured to process digital data in a series of frames that correspond to a fixed period in time. The electrical circuit is further configured to reduce noise in the resulting signal by varying the current draw required in a randomized or pseudo-randomized fashion between adjacent frames of digital data.