Fully Anechoic Chamber

Overview

High-Precision Free-Field Acoustic Measurement Chamber

This photo shows a modular fully-anechoic chamber designed for high-precision acoustic measurements under true free-field conditions.
High-performance absorption wedges are installed on the walls, ceiling, and floor, effectively eliminating sound reflections and standing waves.

A mesh floor structure allows sound absorption beneath the walking surface, enabling accurate sound radiation measurements in all directions.
The free-field environment supports precise evaluation of sound sources without environmental influence.

The modular design also allows flexible size and layout customization according to testing requirements and installation conditions.

Measurement target	Precision equipment, automotive components, electronic components, nanotechnology related products, environmental protection products, etc.
Measurement purpose	Sound power level, sound intensity measurement, abnormal noise detection, product performance acoustic measurement, etc.
Measuring equipment	Standard and precision sound level meters, FFT analyzers, vibration meters, various acoustic evaluation equipment, etc.

Reference Dimensions

Ensure first-class sound insulation effect.

Our soundproof chamber has unparalleled sound insulation performance. Depending on the installation environment, the background noise level inside the anechoic chamber can approach 0 dB. Installing our anechoic chamber can create an advanced acoustic measurement space.

Isolation volume (transmission loss)/dB

Isolation volume (transmission loss)/dB
Hertz		63	125	250	500	1K	2K	4K	8K
Ensure sound insulation performance	X	(25)	30	36	40	49	53	55	54
	H	(28)	35	41	45	51	55	57	56
	S	(32)	40	46	50	56	60	62	61
Actual sound insulation value	X	36.8	52.4	55.3	61.8	66.2	70.0	79.3	79.9
	H	42.4	43.0	53.9	67.1	67.7	71.9	75.4	84.9
	S	34.8	51.0	63.5	69.8	73.8	78.3	81.6	88.1

The announced sound insulation performance

We guarantee the sound insulation performance. We use a noise signal generator, speakers, and standard or precision sound level meters to measure (transmission loss test) according to JISA1417:2000 standard, and submit the test results in the form of a “measurement result report”.

Measurable range/meter

Measurable range calculation
Hertz		63	80	100	125	160	200	250
Measurable range m	X-3	0.29	0.46	0.68	0.91	1.13	1.62	2.84
	S-3	0.14	0.17	0.22	0.29	0.43	0.53	0.95
	H-3	0.35	0.51	0.82	1.55	3.14	3.14	3.14

Other specifications

Specifications
X	S	H
● Compact wedge-shaped sound-absorbing panel HV02W: a 310mm thick sound-absorbing wedge-shaped sound-absorbing panel ● Soundproofing Solamata board: 3TS65	● Non combustible sound-absorbing wedge material: T-250: sound-absorbing wedge material with a thickness of 250mm ● Soundproofing Solamata board: 3TS65	● Non combustible sound-absorbing wedge material: T-500: sound-absorbing wedge material with a thickness of 500mm ● Soundproofing Solamata board: 3TS65
Please request drawings for more details.
● Single soundproof door: interior wall sound-absorbing layer ● Walkway: Grille (coated finish), capable of bearing over 200 kilograms ● Vibration isolation layer ● Common pipeline diameter 65mm+internal and external soundproof cover ● Microphone hook, intake diffraction muffler, exhaust diffraction muffler ● Muffler, soundproofing EA filter, completion documents (drawings, specifications, etc.), bulb type LED lighting, 100V-3P-2 socket, 10W indicator light with “in use” mark, Xiluoke fan+flexible muffler, switch box/distribution box, secondary wiring engineering, soundproofing measurement and measurement result report, inverse square measurement and measurement result report

Key Features

Fully anechoic structure with absorbers on all surfaces
Free-field acoustic measurement environment
Suppression of reflections and standing waves
Mesh floor with under-floor sound absorption
Modular design for flexible sizing and layout

Installation Example

The interior wall is equipped with a crank rail type sound-absorbing door that can be opened and closed

Wind tunnel testing equipment+anechoic chamber

Typical Applications

Free-field measurement of loudspeakers and sound sources
Sensitivity calibration of microphones and sensors
Sound radiation and directivity evaluation
R&D for acoustic and precision devices
High-accuracy acoustic testing based on international standards

Option

Air conditioning equipment
Monitor
Traffic light
BNC shelf
Walkie-talkie
Various alarm devices
Fire alarm
Seismic design

Other

All structural materials of the soundproof chamber are made of non combustible materials.
We are planning to measure background noise and frequency analysis at the installation location, and set guaranteed values.
The completed documents (sound absorption characteristic data, design drawings, user manual, sound insulation test data) include.
We also provide sound level meters and sound level analyzers.
We can also change the size of the soundproof chamber and adjust its sound absorption performance to suit your installation layout.
Relocation is possible
The delivery time depends on the operational status of the factory. Please contact us for details.