ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,148, issued on Oct. 21, was assigned to NTT Inc. (Tokyo).

"Sound signal refinement method, sound signal decode method, apparatus thereof, program, and storage medium" was invented by Ryosuke Sugiura (Tokyo), Takehiro Moriya (Tokyo) and Yutaka Kamamoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a technology that improves, in a case where there is a sound signal obtained from a different code that is different from a code from which a decoded sound signal is obtained and that is derived from the same sound signal, the decoded sound signal by using the sound signal obtained from the different code. A signal (hereinafter, re...