US Patent Issued to Amazon Technologies on Jan. 20 for "Step-size control for multi-channel acoustic echo canceller" (California Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,048, issued on Jan. 20, was assigned to Amazon Technologies Inc. (Seattle).

"Step-size control for multi-channel acoustic echo canceller" was invented by Sai Ravi Teja Pulugurtha (Milpitas, Calif.), Robert Ayrapetian (Morgan Hill, Calif.), Pradeep Kumar Govindaraju (San Jose, Calif.) and Madhuri Saraf (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic echo cancellation (AEC) system that dynamically controls an adaptation speed of an adaptive filter, enabling the adaptive filter to converge quickly while protecting near-end speech. For example, a device may control the adaptation speed of the adaptive filter to adapt quickl...