ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,367, issued on June 3, was assigned to Comcast Cable Communications LLC (Philadelphia).
"Sound wave dead spot generation" was invented by Adam Eng (Golden, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker system uses destructive wave interference to generate "dead spots" with respect to an audio presentation. The signal for the dead spot generating device can be an inverted signal generated using the audio signal. In one embodiment, the inverted signal is generated using the audio signal, an indication of loudness at one or more active speakers, and a determination of the characteristics of the sound path from the one or more active spe...