ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,580, issued on Sept. 9, was assigned to Hitachi Ltd. (Tokyo).

"Sound extraction system and sound extraction method" was invented by Yohei Kawaguchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a sound extraction system and a sound extraction method capable of accurately extracting, from mixture signals, a signal corresponding to a sound which a user wants to extract. The sound extraction system includes a sound extraction device configured to extract, from mixture signals including a signal corresponding to an extraction target sound, the signal corresponding to the extraction target sound. The sound extraction device is configu...