US Patent Issued to NIPPON TELEGRAPH AND TELEPHONE on July 1 for "Acoustic signal enhancement apparatus, method and program" (Japanese Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,945, issued on July 1, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Acoustic signal enhancement apparatus, method and program" was invented by Tomohiro Nakatani (Tokyo), Rintaro Ikeshita (Tokyo), Keisuke Kinoshita (Tokyo), Hiroshi Sawada (Tokyo) and Shoko Araki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an acoustic signal enhancement device, including a time-space covariance matrix estimation unit configured to estimate a time-space covariance matrix corresponding to a sound source, using a power of the sound source and an observation signal vector composed of an observation signal from a microphone. A reverbe...