Services

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Acoustic Material Manufacturers & Suppliers

Alfa Acoustics provide end- to-end solutions to Acoustic material manufactures, Suppliers and end users. With our specialized expertise in Acoustic materials, we can provide following services.

  • Acoustic material development and Quality Assurance.
  • Characterization of acoustic materials to understand acoustic performance (Biot Parameters).
  • Measurement of Acoustic performance in terms of Sound absorption coefficient (NRC) and Sound Transmission Loss (STC).
  • Design and Simulation of an innovative acoustic material to meet end user requirements.
  • Sound Package Development for Vehicle noise control.
  • In-house Acoustic test facility development to its customers to reduce time and cost.
Foams and Fibers
Sound Absorption Coefficient

It is defined as the ratio of the sound energy reflected by a surface to the sound energy incident upon that surface.

Test Standards

  • ISO 10534 - Determination of sound absorption coefficient and impedance in impedance tube-Transfer function method
  • ASTM E1050 - Standard test method for impedance and absorption of acoustical materials using a tube, two microphones and a digital frequency analysis system
  • ISO 354 - Measurement of a sound absorption coefficient in a reverberation room
  • ASTM C423 - Standard test method for sound absorption and sound absorption coefficients by reverberation chamber method

Acoustic Material Characterization and Simulation

  • Porosity Measurement by Porosity test rig
  • Airflow Resistivity Measurement by Flow resistivity rig based on ASTM C522
  • Tortuosity and characteristics lengths by indirect method and Inverse characterization
  • Design and simulation of multilayer treatments for Genset and Industrial Applications
  • Effect of Films / Foils / Resistive layers with Foams/Fibers/Felts

Multilayer Sound Absorption Simulation

Variation in Airflow Resistivity of Same Density Foam

Simulation and Validation for multilayer combination

Macroscopic Characterization

Sound Absorption Simulation-Multiple Thickness

Airflow Resistivity Variation in same density foam

Simulation and Validation of PU Foam

Simulation and Validation for Composite PU Foam

Impedance Tube ASTM E1050 / ISO 10534-2 / ASTM E2611

Simulation of Rockwool Sound Absorption

Simulation and Validation for Composite PU Foam

Sound Absorption-Same Density, Same Thickness

Simulation of Polyester Felt Sound Absorption

Simulation of Polyester Felt Sound Transmission Loss

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Acoustic Material Manufacturers & Suppliers
Automotive Acoustic Materials
Architectural & Building Acoustics
What can we do for you
  • Acoustic Material Characterization, Simulation and Testing
  • Test Rig Design and Development for Acoustic Materials
  • Design of Windows, Doors, Drywall partitions and False Ceilings
  • Acoustic Testing of Building Components in Lab and On Site
  • Acoustic Material Development for Automotive and Building Acoustics
  • Acoustic Design of Studios, Theaters, Auditoriums, Hotels and Offices
  • Acoustic Software Development for Automotive and Building Acoustic Materials
  • Consultancy for Acoustic Material Manufacturers and Suppliers
  • Acoustic Test facility Design – Jury Room, Reverberation Chamber, Anechoic Chamber
Acoustic Test Rig For Material Characterization
Wide range of Test Instruments and softwares For Design and development of Acoustic Packaging