US Patent Issued to Sonos on Sept. 1 for "Tone and echo cancellation using two acoustic sound cancellers" (California Inventor)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,725,614, issued on Sept. 1, was assigned to Sonos Inc. (Goleta, Calif.).

"Tone and echo cancellation using two acoustic sound cancellers" was invented by Saeed Bagheri Sereshki (Goleta, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Example techniques involve systems with multiple acoustic echo cancellers. An example implementation captures first audio within an acoustic environment and detecting, within the captured first audio content, a wake-word. In response to the wake-word and before playing an acknowledgement tone, the implementation activates (a) a first sound canceller when one or more speakers are playing back audio content or (b) a sec...