FIELD: aeronautical engineering; reduction of level of aircraft engine noise.
SUBSTANCE: proposed method includes reception and conversion of noise acoustic signals into electric signal, transmission of received signal to point of its processing for active reduction of noise level, amplification, conversion into sound signal and radiation to area of space of reduction of noise signals. Electric signals for active reduction of noise are shaped in low-frequency part of noise spectrum for increase of sizes in space where noises are reduced. Systems proposed for realization of this method are mounted at points where people are the moist likely to be present.
EFFECT: enhanced efficiency of reduction of noise.
22 cl, 12 dwg
