US Patent Issued to Alps Alpine on Sept. 23 for "Speaker distortion compensation device and speaker unit" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,786, issued on Sept. 23, was assigned to Alps Alpine Co. LTD (Tokyo).

"Speaker distortion compensation device and speaker unit" was invented by Yuji Saito (Fukushima, Japan), Katsuhiko Egami (Fukushima, Japan) and Hiroyuki Taguchi (Fukushima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker has a magnetic angle sensor that detects the displacement of the vibration system of the speaker. A non-linearity compensation filter compensates for output distortion due to a non-linear parameter of the speaker. A transfer function of a linear inverse filter is applied so that output distortion is eliminated from the displacement, detected by the...