FIELD: physics, acoustics.
SUBSTANCE: invention relates to industrial acoustics. Acoustic structure comprises shop carcass, load-bearing walls with guards composed of the floor and walls lined with sound absorbing structures, window and door frames and single sound dampers. Single sound dampers are composed of noise killers consisting of the case with flap cover and filled with sound absorbing material placed in protective shell. Case walls are composed by sound absorbing structure composed by cylindrical perforated coaxial shells, inner and outer, with sound absorber arranged there between. Sound absorber is composed of at least one shaped porous sheet. Note here that sheet cross-section profile can be triangular, rectangular, trapezoidal, circle arc or sinusoidal.
EFFECT: higher efficiency of noise killing.
2 cl, 8 dwg
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