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:
Aug. 04, 2026
Filed:
Mar. 26, 2024
Amazon Technologies, Inc., Seattle, WA (US);
Karim Helwani, San Mateo, CA (US);
Michael Mark Goodwin, Scotts Valley, CA (US);
Erfan Soltanmohammadi, Silver Spring, MD (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Per frame inputs for post filter echo suppression are determined. Captured audio data of a two-way communication that includes a far-end signal played via a speaker may be processed as different sub-bands of individual frames. A machine learning model may be applied that is trained to accept the different sub-bands of a frame and corresponding sub-bands of a corresponding frame of the far-end audio data as inputs to generate outputs that can be used as post-filter inputs for the frame. The post-filter inputs that are output from the machine learning model may include an attenuation parameter, near-end estimate and echo estimate. A post filter may be applied to the different sub-bands of the frame sing the post-filter inputs to remove echo data caused by the far-end audio data in the captured audio data.