ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,479, issued on Nov. 25, was assigned to NTT Inc. (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: "An acoustic signal enhancement device includes: a spatiotemporal covariance matrix estimation unit 2 configured to estimate spatiotemporal covariance matrices Rf(j) and Pf(j); a reverberation suppression unit 3 configured to obtain a reverberation suppression filter Gf(j) of the sound source j using the estimated spatiotemporal covariance matrices ...