Anechoic Chamber Design & Setup Services
We offer turnkey anechoic chamber design and setup services to construct precision, free-field acoustic testing environments for industrial R&D, product development, and scientific metrology. Derived from the term “anechoic”—meaning “free from echoes or reverberations”—an ideal anechoic chamber eliminates internal sound reflections from walls, ceilings, and floors to simulate an acoustically infinite free-field environment.
In an ideal free-field environment, sound propagation adheres perfectly to the Inverse Square Law, where sound pressure levels drop by exactly $6\text{ dB}$ for every doubling of distance from the sound source. To maintain this acoustic purity, our chamber setups absorb over 99% of incident sound waves while providing extreme isolation from external ambient noise and structural vibrations.
Critical Engineering Parameters in Anechoic Chamber Setup
Designing a fully qualified anechoic or hemi-anechoic room requires balancing complex acoustical, mechanical, electrical, structural, and aerodynamic variables. In addition to acoustic lining selection, environmental parameters—including ambient temperature, static pressure, relative humidity, and air velocity—must be strictly controlled to prevent unpredictable disturbances to the uniform radiation of sound waves:
| Design & Setup Domain | Key Engineering Consideration | Practical Function |
|---|---|---|
|
Acoustic Treatment & Cut-Off |
Selection of absorption wedges (polyurethane foam or fiberglass) based on target cut-off frequency. |
Ensures greater or equals to 99% sound absorption above specified low-frequency limits. |
|
Acoustic & Vibration Isolation |
Double-wall “box-in-a-box” construction, parent room noise analysis, floating floor spring mounts. |
Prevents parent room ambient noise and structural vibration from entering the chamber. |
|
Aerodynamic & HVAC Controls |
Ultra-quiet, low-velocity ventilation systems with duct silencers. |
Regulates temperature, humidity, and pressure without creating wind turbulence or airflow noise. |
|
Physical & Electrical Infrastructure |
Test object size access doors, shielded lighting, RF shielding, visual monitoring, housekeeping. |
Accommodates large test specimens while providing clean power and electromagnetic interference (EMI) protection. |
To pair your chamber with compliant metrology instrumentation, explore our specialized Acoustic Calibration Laboratory Setup Services or utilize our Sound Localisation & Noise Source Identification Services featuring acoustic camera technology.
Governing Standards for Free-Field Chamber Qualification
Our anechoic chamber design and setup engineering protocols comply with international standards governing sound power determination, audio equipment testing, and free-field acoustic environment qualification:
1. Free-Field Qualification & Sound Power Determination
ISO 3745:2012: Precision methods for anechoic and hemi-anechoic rooms (determination of sound power and energy levels).
ISO 26101-1:2021: Test methods for the qualification of free-field acoustic environments using inverse square law testing.
ISO 13347-3:2004: Industrial fan sound power determination under laboratory conditions using enveloping surface methods.
2. Electroacoustics & Industrial Component Standards
IEC 60268-1 & IEC 60268-5: Sound system equipment testing (amplifiers, loudspeakers, and electroacoustic transducers).
EN 60534-8-2 & EN 60534-2-3: Industrial-process control valves — Laboratory testing of aerodynamic noise and flow capacity.
