Key Product Information

​​​Frequency Range

ETS-Lindgren offers a wide range of standard anechoic chambers to meet our client's needs. Standard chamber models have low-frequency cut off points of 80 Hz, 100 Hz, and 160 Hz. Custom chamber designs to meet other performance specifications are available.

Free-Field Region

Standard ETS-Lindgren anechoic chambers have free-field regions with a 1 m to 2 m radius. Custom size free-field regions are available.

Precision-Grade Testing

ETS-Lindgren's standard anechoic chambers are designed to comply with ISO 3745 and ISO 26101 free-field limits for both broadband and pure tone testing.​ 

Specifications Select a tab below for more information

  • Removable Grating Floor with Pedestals or Tensioned Steel Cable Floor
  • Modular Steel Isolated Floor
  • ETS-Lindgren's Patented Wedge Clip System
  • Ventilation Silencers for Fan or HVAC Connections (Wall or Ceiling Mounting Locations)
  • Pendant Lights
  • Acoustically treated cable penetrations 2.54 cm and 5.08 cm (1 in and 2 in). Custom sizes available.
  • Engineered and Designed to Host-Site Ambient Conditions
  • Design based on Performance Data that Conforms with ISO 3745 Free-Field Requirements



Acoustic Doors​ETS-Lindgren's SoundSecure™ Plug-in Doors are an integral component of all ETS-Lindgren's acoustic test chambers, sound isolation rooms, and audiometric booths.​
Anechoic Chamber ​​​ETS-Lindgren's Anechoic Chambers provide a precision-grade free-field environment used to measure sound source directivity, frequency response, and noise emissions from spherically radiating sound sources.<br>
Head and Torso Test Enclosure<p>​ETS-Lindgren's Head and Torso Test (HATS) Enclosure provides a free-field environment for making head and torso measurements on small devices such as cell phones and hearing aids. </p>
Hemi-Anechoic Chambers ​​​ETS-Lindgren's Hemi-Anechoic Chambers​ provide a precise free-field environment used to measure sound sources over a reflecting plane. Typical measurements include product noise testing, sound power, sound source frequency response, and sound source directivity.<br>
Predictable Field Chambers ETS-Lindgren's Predictable Field Enclosures are designed to provide acoustical and statistical energy analysis, to optimize the engineering and design requirements needed for an end-product application. 
Reverberation Chamber ​ETS-Lindgren's Acoustic Reverberation Chambers reflect sound to produce a non-directional or diffuse sound field within the chamber. They are typically used for sound absorption, transmission loss, and sound power measurements.
Small Device Test Enclosures ​ETS-Lindgren’s Small Device (SD) Test Enclosures provide a free-field environment for making survey and engineering grade measurements on small devices. ​

Key Features

  • 80 Hz to 20 kHz (Standard Models, Custom Models Available)
  • 1m to 2m Radius Spherical Free Field (Custom Sizes Also Available) Precision-Grade Testing
  • Audio Testing
  • Loudspeaker and Microphone Testing
  • Noise Control and Noise Emission Testing
  • Sound Absorption Testing
  • Transmission Loss Testing
  • Sound Power Testing
  • Production Line Testing
  • Sound Isolation

Literature and Videos<a href="/sites/etsauthor/ProductBrochures/General%20Brochures/Acoustic%20Full%20Line%20Brochure.pdf"><img alt="" src="/_layouts/15/IMAGES/icpdf.png" />Acoustic Full Line Brochure.pdf</a>

L o a d i n g

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