Acoustic performance

Acoustic-solution
Noise generated by machinery and equipment in industrial plants often makes the work environment unpleasant and even harmful to hearing. To solve the problem, separate people from the machinery by building sound-insulated machine rooms and control rooms or acoustic screens.
With perforated PAROC® acoustic panels, you ensure sufficient sound attenuation and insulation. Along with the sound control you get stylish finished surfaces for interior purposes. 

Sound absorption

In their standard form, PAROC insulated panels have steel sheet facings. This means the sound absorption is actually a reflecting surface similar to a conventional sheet metal wall. PAROC® acoustic panels have a perforated facing on one side which improves the panel's sound absorption properties. 
 

PAROC_produkt_3D_render_FI-I-30X-Fire1-3D
Paroc_Practical_sound_absorption_coefficient
Practical sound absorption coefficient αp for various structures.

To obtain better sound absorption for non-perforated PAROC panels, apply acoustic stone wool slabs as sound absorbents.
Paroc_acoustic_INT

Sound insulation

When sound insulation demands are high, pay special attention to the tightness of joints with adjacent structures. The diagram below shows the sound reduction index for 50 mm, 150 mm and 240 mm thick PAROC insulated panels as well as a 100 mm thick PAROC® acoustic panel, panel type AST® S.

Combination of two panels or panels with other materials, can give great solutions for high requirements of sound reduction, up to 50-60 dB reduction. Be in contact with Paroc Panel System for more info.
Paroc_Sound-reduction-index

If you know the noise level and noise spectra, you can calculate the sound insulation for the specific object. Or use the values given in the table below to obtain the sound reduction in dBA for various noise spectra. 

Weighted sound reduction of PAROC insulated panels at various noise spectra, panel type AST® S.

 

Panel thickness,
mm
Sound reduction, dB
 Rw R'w + C   R'w + Ctr
50 29 27 26
80 30 27 25
100 30 27 25
120 30 27 25
150 30 27 25
200 29 28 26
240 29 28 26

Use R’w+ C for
  • Train noise at high and medium speeds
  • Road traffic over 80 km/h
  • Jet noise at short distances
  • Industrial noise (medium and high frequency)
Use R’w+ Ctr for
  • Street traffic noise
  • Train noise at low speeds
  • Jet noise at long distances
  • Industrial noise (low and medium frequency)
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