US Patent Issued to recalm on Nov. 18 for "Noise reduction system having a nonlinearity filter unit, method of operating the system and use of the system" (German Inventor)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,475,874, issued on Nov. 18, was assigned to recalm GmbH (Hamburg, Germany).

"Noise reduction system having a nonlinearity filter unit, method of operating the system and use of the system" was invented by Marc Von Elling (Hamburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A noise reduction system for actively compensating background noise in a passenger transport area of a vehicle. The noise reduction system includes a nonlinearity filter unit having a model of a non-linear transfer function of the sound generator, wherein the nonlinearity filter unit is configured to receive the anti-noise signal and to generate a filtered anti-noise signa...