ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,618, issued on Sept. 8, was assigned to Sonos Inc. (Goleta, Calif.).

"Audio caching for synchronous playback" was invented by Hrishikesh Gossain (Santa Barbara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed embodiments include a playback device configured to: (i) maintain a cache comprising a plurality of tracks, wherein an individual track comprises a series of frames, and an individual frame comprises a portion of audio; (ii) after receiving a request to play a particular track, determining whether the particular track is in the cache at the playback device; (iii) when the particular track is in the cache at the playback device, ...