The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2021
Filed:
Aug. 13, 2019
Applicant:
Amazon Technologies, Inc., Seattle, WA (US);
Inventor:
Amit Chhetri, Sunnyvale, CA (US);
Assignee:
Amazon Technologies, Inc., Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 21/0232 (2013.01); H04R 1/40 (2006.01); H04R 3/00 (2006.01); G10L 25/84 (2013.01); G10L 15/22 (2006.01); G10L 15/20 (2006.01); H04R 3/04 (2006.01); G10L 21/0208 (2013.01);
U.S. Cl.
CPC ...
G10L 21/0232 (2013.01); G10L 15/20 (2013.01); G10L 15/22 (2013.01); G10L 25/84 (2013.01); H04R 1/406 (2013.01); H04R 3/005 (2013.01); H04R 3/04 (2013.01); G10L 2021/02082 (2013.01);
Abstract
A device capable of motion includes an acoustic echo canceller for cancelling a reference signal from received audio data. The device updates an adaptive filter as the device moves to reflect the changing audio channel between a loudspeaker and a microphone of the device. A step size for changing coefficients of the filter is determined based on its velocity. A number of iterations for updating the filter using a frame of audio data is also determined based on the velocity.