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This section provides an overview for acoustic anechoic chamber as well as their applications and principles. Also, please take a look at the list of 4 acoustic anechoic chamber manufacturers and their company rankings. Here are the top-ranked acoustic anechoic chamber companies as of July, 2025: 1.Sonora Technology Co., Ltd., 2.IAC Acoustics, 3.Eckel Industries Inc..
Table of Contents
Anechoic chamber is a room designed to block out external sound waves (soundproofing) and prevent sound from reflecting within the room (sound absorption). It is used for measuring noise from automotive parts, household appliances, and other sources with noise meters and analyzers.
- ISO3741: Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
- ISO3744: Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane
- ISO3745: Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms
- ISO362-1, 2, 3: Acoustics - Engineering method for measurement of noise emitted by accelerating road vehicles…
- ISO13325: Tyres - Coast-by methods for measurement of tyre-to-road sound emission
- ISO26101-1: Acoustics - Test methods for the qualification of the acoustic environment
- ISO11201: Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a workstation and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
- etc…
[Anechoic chambers used for each purpose]
1 Anechoic chambers for acoustical measurements
2 Anechoic chambers for electromagnetic compatibility (EMC), electromagnetic interference (EMI) and RF testing
[Differences in each shape and DUT (device under test)]
1 Fully anechoic chamber: sound absorption layer on six faces (floor, walls and ceiling) often used to measure consumer electronics and compact driving components.
2 Semi-anechoic chamber: sound absorption layer on 5 faces (walls and ceiling) often used to measure DUT to be placed on the ground such as automobile
Depending on the measurement purpose, anechoic chambers may be referred as followings:
- VSAC: Vehicle Semi-Anechoic Chambers
- EAAC: Electroacoustic Anechoic Chambers
- SPAC: Sound Power Anechoic Chambers
*Including some distributors, etc.
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IAC Acoustics, established in 1949 and headquartered in Illinois, United States, is a manufacturer and supplier specializing in metal noise control solutions. The company’s portfolio caters to industrial, architectural, and medical applications. Their industrial solutions include in-plant and outdoor enclosures, noise barriers, and anechoic chambers. Architectural solutions include secure facilities, acoustical doors, windows, and music practice rooms. Their medical solutions include audiology booths and test chambers. IAC Acoustics provides noise control products and acoustic systems locally and internationally to clients across various industries.
Ranking as of July 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Sonora Technology Co., Ltd. |
39.2%
|
| 2 | IAC Acoustics |
29.2%
|
| 3 | Eckel Industries Inc. |
16.2%
|
| 4 | FAIST ANLAGENBAU GMBH. |
15.4%
|
Derivation Method
The ranking is calculated based on the click share within the acoustic anechoic chamber page as of July 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
1 | 33.3% |
|
Germany
|
1 | 33.3% |
|
Japan
|
1 | 33.3% |
111 products found
111 products
Shield Room Co., Ltd.
370+ people viewing
Last viewed: 5 hours ago
The SAD type shielded room is a high-performance shielded room that can be manufactured with a sealed panel that allows you to select the desired f...
Shield Room Co., Ltd.
370+ people viewing
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The SA type shielded room is a shielded room that can be manufactured with a sealed panel that allows you to select the desired frequency band and ...
Shield Room Co., Ltd.
280+ people viewing
Last viewed: 16 hours ago
The SAN type shield room is a panel-type shield room that uses expandable nets on the ceiling and the upper half of the walls. Since the expanded n...
Shield Room Co., Ltd.
330+ people viewing
Last viewed: 3 hours ago
The AN-100 type shield room is the lightest panel type simple shield room using SUS mesh. The SUS mesh part has excellent breathability and transpa...
Shield Room Co., Ltd.
380+ people viewing
Last viewed: 16 minutes ago
This is a simple radio anechoic chamber that prevents radio wave reflection within the shield room by uniformly pasting radio wave absorbers (ferri...
SHIELD TECH INDUSTRY LIMITED.
180+ people viewing
Last viewed: 6 hours ago
This is a test machine that can be assembled by the customer. Of course, we can also deliver the product after assembly. (Separate assembly fee wil...
SHIELD TECH INDUSTRY LIMITED.
290+ people viewing
Last viewed: 11 hours ago
Easy to assemble by yourself. We can also assemble and deliver it to you. (Separate assembly fee will be charged.) We can introduce various variat...
Yagyu Shokai Co., Ltd.
270+ people viewing
■Features ・High visibility and access inside the box is achieved with 3 transparent doors. ・Can be stacked. - Adopts a magnetic door latch.
Shizuka Co., Ltd.
330+ people viewing
Last viewed: 8 minutes ago
This is a unit-type anechoic chamber made possible by our unique sound insulation and sound absorption technology, with sound-absorbing wedges inst...
Shizuka Co., Ltd.
310+ people viewing
Last viewed: 17 minutes ago
This is a unit-type anechoic chamber made possible by our unique sound insulation and sound absorption technology, with sound-absorbing wedges inst...
Shizuka Co., Ltd.
250+ people viewing
Last viewed: 17 minutes ago
This is a soundproof inspection room for acoustic measurements. It is positioned as a simple anechoic chamber. Although the sound insulation and so...
Shizuka Co., Ltd.
280+ people viewing
Last viewed: 14 minutes ago
This is an anechoic box that uses sound-absorbing wedges on the inner wall. You can perform more advanced measurements than an anechoic box. The so...
Shizuka Co., Ltd.
250+ people viewing
Last viewed: 16 minutes ago
This is an acoustic measurement box for small-sized measurements of home appliances, communication equipment, drive parts, etc. The six sides of th...
Keihin Enclosing Co., Ltd.
180+ people viewing
Last viewed: 1 hour ago
■Anechoic chamber/semi-anechoic chamber - A space with no surrounding reflections is called a free sound field, and a space where only the floor is...
