Invention Grant
- Patent Title: Beamforming techniques for acoustic interference cancellation
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Application No.: US17203905Application Date: 2021-03-17
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Publication No.: US11438695B1Publication Date: 2022-09-06
- Inventor: Amos Schreibman , Anna Barnov
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Lorenz & Kopf LLP
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R1/32

Abstract:
The present application relates to a system and method for receiving, via a microphone array, an incoming acoustic signal including a desired signal and an undesired signal, performing a first minimum variance distortionless response beamforming operation on the incoming acoustic signal to isolate the desired signal, performing a second minimum variance distortionless response beamforming operation, by the signal processor, on the incoming acoust signal to isolate the undesired signal, filtering the desired signal to generate a filtered desired signal, combining an inverse of the filtered desired signal with the undesired signal to generate a combined undesired signal, filtering the combined undesired signal to generate a filtered combined undesired signal, combining an inverse of the combined undesired signal and the desired signal to generate an output signal, and generating a data signal in response to the output signal for transmission via a wireless network.
Public/Granted literature
- US20220303677A1 BEAMFORMING TECHNIQUES FOR ACOUSTIC INTERFERENCE CANCELLATION Public/Granted day:2022-09-22
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