Verfahren und System zur Rauschunterdrückung

Details

Veröffentlichungs-Nr.

EP3822933

Aktenzeichen

EP19383009

Anmeldetag

15. November 2019

Veröffentlichung

25. Juni 2025

Erteilung

25. Juni 2025

Rechtsraum

EP

IPC

G08B17/10G10K11/178

Abstract

Aspects of the invention are directed towards a system (100) and method for noise suppression. One or more embodiments of the invention describe the method comprising steps of receiving noise by a microphone and deriving a noise signal from the noise, the noise produced by a fan (104) of a fire/smoke detection unit (102) while drawing air and detecting the speed of the fan of the fire/smoke detection unit. The method further describes steps of amplifying the noise signal by the amplifier received from the microphone and producing an anti-phase noise signal by shifting a phase of the amplified noise signal received from the amplifier wherein the anti-phase noise signal is dependent on the detected speed of the fan. The method further describes steps of outputting the anti-phase noise signal through a speaker to suppress the noise produced by the fan of the fire/smoke detection unit while drawing the air.

Anmelder

Firma

Carrier Corporation

Land

🇺🇸 USA

Fachgebiete