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Acousys | English

Transportation and building multi-layer acoustic systems performance prediction software

AcouSYS is suited for building and transportation professionals, as this software allows you to calculate the acoustic performance of complex multi-layer structures in your work projects.

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Advantages of AcouSYS

  • Ergonomic – User friendly interface
  • Exhaustive – Highly varied materials database
  • High performance – Results comparable with standardised measurements carried out in laboratory

Evaluate the acoustic performance of materials in your project

By selecting the system type

This software is applicable to most construction domains (walls, cavity walls, partitions, metal frame partitions, ETICS, floating screed, rockwool systems, tiles with underlay, ceilings, absorbent ceilings, road screens, etc.) and in transport systems (flooring, doors, partitions, sandwich panels).

By selecting the materials

Access a highly varied database (steel, aluminium, concrete, polystyrene, plaster, rockwool, partition frame elements). The materials are classified by type, and grouped into sub-families:

  • Fluids – air, water, etc.
  • Solid isotropic media – plasterboard, cell foams, metals, concretes, wood, glass, plaster and coatings, equivalent solids.
  • Orthotropic solid materials – stiff plate, cavity brick, etc.
  • Viscoelastic material – heavy mass, bituminous layers, etc.
  • Porous materials (general Biot-Allard model) – mineral wool, wood fibre, bio-sourced materials (hemp, straw, cellulose wadding, etc.).
  • Materials with double porosity – absorbent materials with inclusions (cavities or presence of a second type of material);
  • Solid perforated materials – perforated sheet, etc.
  • Framework components – metal beams, etc.

Instantly access materials by a fast and simple search, by family, manufacturer or key words. You also have complete liberty to create new materials!

Create a multi-layer structure and perform calculations

Model your multi-layer structure by specifying the input data of the various materials and associated thicknesses. The software is based on the Transfert Matrix Method (TMM) associated with spatula windowing in order to the finished dimensions of the system.
Perform a series of calculations and obtain the acoustic performance indicators such as:

  • Acoustic attenuation index R
  • Improved attenuation index ΔR, STC
  • Acoustic absorbtion coefficient α, NRC and SAA
  • Level of shockwave noise Ln, IIC
  • Reduction in the level of shockwave noise ΔL
  • Rain noise level LiA
  • Loss of transmission due to excitation of turbulent boundary layer (Corcos model)
  • Unique associated indexes such as Rw(C;Ctr), Ln,w, αw, LiA, according to the corresponding standards

The software display mode permits the simultaneous visualisation and comparison of several simulations, or a comparison of calculation/measurement. Acousys is effective software for carrying out rapid and complete studies, optimisation and parametric studies.

Evaluate the acoustic attenuation index of metal frame partition with the partition plugin module

Integrated into the AcouSYS software is the partition Plug-in module it permits evaluation of the acoustic attenuation index of metal frame partitions. For this study, the module takes into account the vibratory short circuits associated with the metal frame elements, by coupling the TMM approach with a Statical Energy Analysis (SEA) developed by CSTB.
Visualising and interpreting with the partition Plug-in:

  • 3D visualisation of the multi-layer structure
  • Narrow band results, 1/3 octave over the frequency range 20-10000 Hz
  • Calculation of unique indexes Rw(C;Ctr), Ln,w, αw, LiA (according to ISO 717-1, ISO 717-2, ISO 11654, ISO 140-18 standards)
  • Import of laboratory measurements for a rapid comparison
  • Automatic report generation module
  • Data export module
  • Results export module is directly transferable to ACOUBAT software.

Did you know?

The results obtained are directly comparable with the measurements carried out by LABE – Laboratoire Européen d’Acoustique du Bâtiment

View case studies with AcouSYS

Download the Validation Booklet to compare measurements and simulation.