Anti-sound wave generator - incorporates at least fluidic amplifier with input and output connections

摘要

At least one fluidic amplifier (1) is incorporated, which has at least one input connection (5), and at least two output connections (41, 42). To the input connection(s) is connected one end of a pipe conduit (2), the other end of which is open and in the proximity of the noise source (3). On the output connections, acoustic adaptors (6) are provided. The adjacent output connections (41, 42) radiate sound waves phase-displaced through 180 deg., and their radiation apertures of the acoustic adaptors are spaced by a distance which amounts to an odd number multiple of lambda/2. The acoustic adaptors (6) are lambda/4 Helmholtz resonators or funnel resonators. USE - Acoustic system to cut out periodically sounding noise.