公开(公告)号：US10986437B1

公开(公告)日：2021-04-20

申请号：US16014275

申请日：2018-06-21

Applicant: Amazon Technologies, Inc.

Inventor： Guangdong Pan ,  Chad Jackman ,  Wontak Kim

IPC: H04R1/22 ,  H04R1/40 ,  H04R1/32 ,  H04R1/08 ,  H04R1/28

Abstract: A beamformer system isolates a desired direction of an audio signal received from a first microphone array disposed on a first plane of the system and a second microphone array disposed on a second plane of the system. A spatial covariance matrix (SCM) defines the spatial covariance between pairs of microphones. A diagonal of the SCM is varied based on the placement of the microphones; values corresponding to one microphone array are increased, and values corresponding to the other microphone array are decreased.