ALEXANDRIA, Va., June 10 -- United States Patent no. 12,293,772, issued on May 6, was assigned to EARZZ Ltd. (Devon, Great Britain).

"Method for identifying an audio signal" was invented by Pradyumna Thiruvenkatanathan (London), Guy Spyropoulos (London) and Anindya Moitra (London).

According to the abstract* released by the U.S. Patent & Trademark Office: "A data processing system for identifying an audio signal includes an audio sensor, a receiver module, a signal recognition module, and a receiver device. The receiver module receives audio data from the audio sensor. The receiver module transmits the audio data to the signal recognition module. The signal recognition module calculates time-varying vector arrays of octave band energies, ...