ALEXANDRIA, Va., March 31 -- United States Patent no. 12,593,172, issued on March 31, was assigned to SONY GROUP Corp. (Tokyo).

"Signal processing apparatus and signal processing method" was invented by Atsuo Hiroe (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a signal processing apparatus that includes a reference signal generating section that generates a reference signal corresponding to a target sound on the basis of a mixed sound signal which is recorded with multiple microphones arranged at different positions and is a mixture of the target sound and a non-target sound. The signal processing apparatus further includes a sound source extracting section that extracts, from the mixed s...