Skip to content
Logo Mecanum
  • Measuring Instruments
    • Absorption and Transmission Loss Measurement
      ABSORPTION AND TRANSMISSION LOSS
      • — MATC | Acoustic Test Cabin
      • — TUBE | Impedance and Transmission Tubes
        • ⸺ Asphalt Tube
        • ⸺ Conventional Tubes
        • ⸺ High Level Tube
        • ⸺ Square TubesNew Size!
    • Acoustic Imaging
      ACOUSTIC IMAGING
      • — LF-ANT | 3D Acoustic CameraTop Seller!
    • BIOT Parameters Measurement
      BIOT PARAMETERS
      • — ETA | Oberst Beam
      • — PHI | Porosity and Density Meter
      • — QMA | Quasi-Static Mechanical Analyzer
      • — SIGMA | Resistivity Meters
        • ⸺ Airflow Resistivity MeterMost Popular!
        • ⸺ High Flow Resistivity Meter
      • — TOR | Tortuosity Meter
      • — VBT | Free-Free Beam
    • Accessories
      ACCESSORIES
      • — Air Compressor
      • — Airflow Resistivity Meter Enclosure
      • — Beams Set
      • — Circular Knives for Porous Materials
      • — Porous Material Slicers
      • — Resistive Screen and Fabric Sample Holder
      • — Square Sample Holder Add-OnBest Value!
      • — Weather Station
  • Services
    • Laboratory Acoustic Testing
      LABORATORY ACOUSTIC TESTING
      • — Biot Characterization of Acoustic Materials
      • — Laboratory Testing
    • Acoustic Consulting Projects
      ACOUSTIC CONSULTING PROJECTS
      • — Architectural Acoustics
      • — Environmental Noise
      • — Industrial Noise
      • — NVH Testing
      • — R&D Projects
  • Software
    • FOAM-X

      FOAM-X

      Identification of Acoustic Modeling Parameters

      FOAM-X Logo - Identification of Acoustic Modeling Parameters of Porous Materials
    • NOVA

      NOVA

      Simulation of Multilayer Acoustic Materials

      NOVA Logo - Simulator of Multilayer Acoustic Materials
    • (Free) ADNR

      (Free) ADNR

      Simulation of Plate Vibration

      ADNR Logo - Plate Vibration Simulator
    • (Free) MatLab Scripts

      (Free) MatLab Scripts

      Calculation of Acoustic Indicators and Dynamic Properties

  • Science
    • Our Books
      BOOKS
      • — Finite Element and Boundary Methods in Structural Acoustics and Vibration
      • — Propagation of Sound in Porous Media
    • Learning Center
      LEARNING CENTER
      • — Acoustic 101
      • — Acoustic Materials
      • — Acoustic Properties
  • About Us
    • Achievements
      ACHIEVEMENTS (Instruments)
      • — Characterization Labs in India
      • — China Acoustics Valley
    • Achievements
      ACHIEVEMENTS (Services)
      • — Acoustic Metamaterial for Aerospace
      • — Bio-Based Insulating Foam
    • About Us
      OUR COMPANY
      • — Articles That Talk About Us
      • — Career
      • — Last News
      • — Our Customers
      • — Our Distributors
      • — Our Team
  • Contact Us
Search
  • FR

中國

Free Quote
Free Quote
  • Measuring Instruments
    • ETA | Oberst Beam
    • LF-ANT | 3D Acoustic Camera
    • MATC | Acoustic Test Cabin
    • PHI | Porosity and Density Meter
    • QMA | Quasi-Static Mechanical Analyzer
    • SIGMA | Airflow Resistivity Meter
    • HF-SIGMA | High Flow Resistivity Meter
    • TOR | Tortuosity Meter
    • TUBE | Impedance and Transmission Tubes
    • VBT | Free-Free Beam
    • Accessories
  • Services
    • Architectural Acoustics
    • Biot Characterization
    • Environmental Noise
    • Industrial Noise
    • Laboratory Testing
    • NVH Testing
    • R&D Projects
  • Software
    • ADNR
    • FOAM-X
    • MatLab Scripts (Free)
    • NOVA
  • Science
    • Learning Center
    • Our Books
  • About Us
    • Articles That Talk About Us
    • Career
    • News
    • Our Achievements
    • Our Customers
    • Our Distributors
    • Our Team
  • Contact Us
Logo Mecanum
  • FR

中國

  • Measuring Instruments
    • ETA | Oberst Beam
    • LF-ANT | 3D Acoustic Camera
    • MATC | Acoustic Test Cabin
    • PHI | Porosity and Density Meter
    • QMA | Quasi-Static Mechanical Analyzer
    • SIGMA | Airflow Resistivity Meter
    • HF-SIGMA | High Flow Resistivity Meter
    • TOR | Tortuosity Meter
    • TUBE | Impedance and Transmission Tubes
    • VBT | Free-Free Beam
    • Accessories
  • Services
    • Architectural Acoustics
    • Biot Characterization
    • Environmental Noise
    • Industrial Noise
    • Laboratory Testing
    • NVH Testing
    • R&D Projects
  • Software
    • ADNR
    • FOAM-X
    • MatLab Scripts (Free)
    • NOVA
  • Science
    • Learning Center
    • Our Books
  • About Us
    • Articles That Talk About Us
    • Career
    • News
    • Our Achievements
    • Our Customers
    • Our Distributors
    • Our Team
  • Contact Us

Acoustic Materials

  • Home
  • Blog
  • Learning Center
  • Acoustic Materials
Cabin-Courbe

Diffuse Field Absorption Coefficient Measurement (Alpha)

Acoustic Materials

The absorption measurement in a reverberation chamber or in a small cabin is also called absorption measurement in diffuse fields or under diffuse incidence. It follows the ASTM C423 or ISO 354 standards.

Diffuse Field Absorption Coefficient Measurement (Alpha) Read More →

Mecanum Circular Impedance and Transmission Tubes - 29 mm, 44.4 mm and 100 mm

Normal Incidence Absorption Coefficient Measurement in an Impedance Tube

Acoustic Materials

An impedance tube, also called a Kundt tube, is a tube fitted at one end with a loudspeaker and at the other end with a sample holder in which the sample of acoustic material to be tested is installed. The measurement is done using two microphones located between the loudspeaker and the sample holder.

Normal Incidence Absorption Coefficient Measurement in an Impedance Tube Read More →

courbe_Alpha_Tube

Determine Acoustic Efficiency of Absorbing Materials

Acoustic Materials

The efficiency of an acoustic material is determined by measuring its absorption coefficient, denoted α. The absorption coefficient is defined as the proportion of acoustic energy that has been absorbed in the material over the total energy.

Determine Acoustic Efficiency of Absorbing Materials Read More →

Fibrous Acoustic Material

What is an Acoustic Absorbent Material?

Acoustic Materials

An acoustic absorbent material is a material in which sound waves penetrate and then are dissipated. There are two main families of absorbent materials: fibrous materials and porous materials.

What is an Acoustic Absorbent Material? Read More →

Copyright © 1998-2023 Mecanum Inc. | Site Map | Terms and Conditions | Cookie Policy | Contact Us

 

Loading Comments...