ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,356, issued on Dec. 2, was assigned to Amazon Technologies Inc. (Seattle).
"Method for wall direction estimation" was invented by Wai Chung Chu (San Jose, Calif.), Trausti Thor Kristjansson (San Jose, Calif.) and Carlo Murgia (Santa Clara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system that performs wall direction estimation to determine a position of an acoustically reflective surface relative to a device. For example, the device may detect a direct sound received from an active sound source and a first reflection reflected from a nearby wall. Based on a time delay, the device can estimate a direction and/or distance to the wall. For...