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:
Dec. 11, 2018
Applicant:
Amazon Technologies, Inc., Seattle, WA (US);
Inventors:
Xianxian Zhang, Santa Clara, CA (US);
Ramya Gopalan, Santa Clara, 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 29/00 (2006.01); G10L 25/21 (2013.01); H04R 3/00 (2006.01); G10L 21/0208 (2013.01);
U.S. Cl.
CPC ...
G10L 21/0232 (2013.01); G10L 25/21 (2013.01); H04R 1/406 (2013.01); H04R 3/005 (2013.01); H04R 29/001 (2013.01); G10L 2021/02082 (2013.01);
Abstract
Techniques for improving acoustic echo cancellation are described. Energy levels of audio data received from a microphone and representing near-end audio and reference audio data representing far-end audio are determined. If near-end audio is detected but far-end audio is not detected, a controller turns of or bypasses an acoustic echo cancellation system until far-end audio is again detected, thereby decreasing or eliminating distortion of the near-end audio by the acoustic echo cancellation system.