Invention Grant
- Patent Title: Loudspeaker beamforming for improved spatial coverage
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Application No.: US17001854Application Date: 2020-08-25
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Publication No.: US11128953B2Publication Date: 2021-09-21
- Inventor: Yuancheng Luo , Wontak Kim , Mihir Dhananjay Shetye
- Applicant: Amazon Technologies, Inc.
- Applicant Address: US WA Seattle
- Assignee: Amazon Technologies, Inc.
- Current Assignee: Amazon Technologies, Inc.
- Current Assignee Address: US WA Seattle
- Agency: Pierce Atwood LLP
- Main IPC: H04R1/40
- IPC: H04R1/40 ; H04R25/00 ; H04S3/00 ; G10L19/008 ; H04R5/02

Abstract:
A system configured to improve spatial coverage of output audio and a corresponding user experience by performing upmixing and loudspeaker beamforming to stereo input signals. The system can perform upmixing to the stereo (e.g., two channel) input signal to extract a center channel and generate three-channel audio data. The system may then perform loudspeaker beamforming to the three-channel audio data to enable two loudspeakers to generate output audio having three distinct beams. The user may interpret the three distinct beams as originating from three separate locations, resulting in the user perceiving a wide virtual sound stage despite the loudspeakers being spaced close together on the device.
Public/Granted literature
- US20210120332A1 LOUDSPEAKER BEAMFORMING FOR IMPROVED SPATIAL COVERAGE Public/Granted day:2021-04-22
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