What is a Fully Anechoic Acoustic Chamber?

A Fully Anechoic Acoustic Chamber is a specialized testing room where all six surfaces are covered with sound-absorbing wedges to eliminate sound reflections and create a free-field acoustic environment for precise measurements.

What are Fully Anechoic Acoustic Chambers used for?

They are used for acoustic testing, loudspeaker testing, microphone calibration, automotive NVH testing, industrial noise analysis, product development, and research applications.

What is the difference between a Fully Anechoic Chamber and a Semi Anechoic Chamber?

A Fully Anechoic Chamber has sound-absorbing material on the floor, walls, and ceiling, while a Semi Anechoic Chamber has a reflective floor and absorbing walls and ceiling, making it suitable for EMC and compliance testing.

Can the chamber be customized for specific applications?

Yes. DMC offers customized Fully Anechoic Acoustic Chambers with configurable dimensions, acoustic wedge depth, ventilation systems, doors, lighting, and frequency performance based on customer requirements.

Why should I choose a DMC Fully Anechoic Acoustic Chamber?

DMC chambers provide high acoustic accuracy, durable construction, customizable designs, reliable performance, and are suitable for laboratories, automotive testing, universities, research centers, and industrial applications.

Fully Anechoic Acoustic Chamber

What is an Fully Anechoic Acoustic Chamber?

An anechoic chamber is a precision acoustical measurement instrument designed to create a free-field environment without reflections and noise interference. Ideally, the inverse square law applies perfectly, with sound levels from a spherical source decreasing by 6dB for each doubling of distance. This requires the room's boundaries to have a sound absorption coefficient of one at all angles. While real-world applications may have slight deviations, these chambers minimize sound reflections with acoustically absorbing materials on all six surfaces.

1. Measurement Target

Precision equipment, automobile parts, electronic parts, nano technology related products, environment-related products, etc.

2. Measurement Purpose

Sound power level, sound intensity measurement, abnormal noise inspection, product performance acoustic measurement, etc.

3. Measuring Equipment

Ordinary, precision sound level meter, FFT analyzer, vibration meter, various acoustic evaluation equipment, etc.

Wedge

T-250

Non-flammable sound absorption wedge: T-250:
Sound absorption wedge thickness 250mm

Sound insulation Solameta panel: 3TS65

HV02W

Compact wedge HV02W: Sound absorption wedge
thickness 310mm

Sound insulation Solameta panel: 3TS65

T-500

Non-flammable sound absorption wedge: T-500:
Sound absorption wedge thickness 500mm

Sound insulation Solameta panel: 3TS65

Fully Anechoic Chamber Dimension

Models	Wedge	Effective (mm)	External Dimensions (mm)
DMC-AFAC-27313260	HV02W	W2000 x L2400 x H2450	W2700 x L3100 x H3260
DMC-AFAC-31373260	HV02W	W2400 x L3000 x H2450	W3100 x L3700 x H3260
DMC-AFAC-37433260	HV02W	W3000 x L3600 x H2450	W3700 x L4300 x H3260
DMC-AFAC-27313200	T-250	W2000 x L2400 x H2450	W2700 x L3100 x H3200
DMC-AFAC-31373200	T-250	W2400 x L3000 x H2450	W3100 x L3700 x H3200
DMC-AFAC-37433200	T-250	W3000 x L3600 x H2450	W3700 x L4300 x H3200
DMC-AFAC-32363700	T-500	W2000 x L2400 x H2450	W3200 x L3600 x H3700
DMC-AFAC-36423700	T-500	W2400 x L3000 x H2450	W3600 x L4200 x H3700
DMC-AFAC-42483700	T-500	W3000 x L3600 x H2450	W4200 x L4800 x H3700

Sound Insulation (Transmission Loss)/dB

Hz	Wedge	63	125	250	500	1K	2K	4K	8K
Guarantee Value of Sound Insulation	HV02W	-25	30	36	40	49	53	55	54
	T-250	-28	35	41	45	51	55	57	56
	T-500	-32	40	46	50	56	60	62	61
Actual Value of Sound Insulation	HV02W	36.8	52.4	55.3	61.8	66.2	70	79.3	79.9
	T-250	42.4	43	53.9	67.1	67.7	71.9	75.4	84.9
	T-500	34.8	51	63.5	69.8	73.8	78.3	81.6	88.1

Measurable Range/m

Hz	63	80	100	125	160	200	250
DMC-AFAC-37433260	0.29	0.46	0.68	0.91	1.13	1.62	2.84
DMC-AFAC-37433200	0.14	0.17	0.22	0.29	0.43	0.53	0.95
DMC-AFAC-42483700	0.35	0.51	0.82	1.55	3.14	3.14	3.14

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Frequently Asked Questions

A Fully Anechoic Acoustic Chamber is a specialized testing room with sound-absorbing wedges covering all six surfaces, including the floor, walls, and ceiling. It eliminates sound reflections to provide an ideal free-field environment for accurate acoustic measurements.

These chambers are commonly used for: • Acoustic testing • Noise source identification • Loudspeaker testing • Microphone calibration • Automotive NVH testing • Research & Development • Industrial sound measurement • Product certification

A Fully Anechoic Chamber absorbs sound on all six surfaces, including the floor, creating a true free-field environment. A Semi Anechoic Chamber has a reflective floor, making it suitable for EMC and compliance testing while still reducing wall and ceiling reflections.

Yes. DMC Fully Anechoic Acoustic Chambers can be customized based on chamber dimensions, frequency range, acoustic wedge depth, door size, ventilation system, lighting, and specific customer testing requirements.

DMC chambers are designed for high acoustic accuracy, durable construction, easy installation, customizable configurations, and reliable long-term performance for laboratories, universities, automotive industries, and research facilities.

Fully Anechoic Acoustic Chamber