ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,077, issued on April 14, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Active sound generation device" was invented by Xun Wang (Saitama, Japan) and Toshio Inoue (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active sound generation device is proposed to generate a sound effect in a vehicle interior. The active sound generation device includes: a low sampling rate generation part, generating a low sampling rate signal by lowering a sampling rate; a processing frequency setting part, setting the sampling rate of the low sampling rate generation part; a high sampling rate generation part, amplifying a sampling rate of the low samp...