Assembled Semi-anechoic Room

No. 1 share in domestic sales of assembled semi-anechoic rooms

Product Overview

Assembled semi-anechoic room is an anechoic space for noise measurement(acoustic power level measurement) of equipment and mechanical. Assembled by Sola metal panels and frame, the inner side consists of non-combustible sound absorbing wedge. It is possible for disassembling and relocated the subject since the assembled semi-anehoic room doesn’t use concrete walls. Besides, we can design customized products according to the purpose of measurement and the layout.

No. 1 share in domestic sales of assembled semi-anechoic rooms

Measuring Targetprecise instrument, auto parts, electronic components, nanotechnology-related products, environment-related products, etc.
Measuring Purposeacoustic power level, acoustic intensity measurement, abnormal sound detection, acoustic measurement for product performance, etc.
Measuring Machinegeneral or precise noise meter , FFT analyzer, vibrometer, various acoustic evaluation equipment, etc.

About Lead Time

Usually, the lead time is about 60 days after order.

It is shortest around 60 days if it’s a standard product size. Please contact us as it may change depending on the operation of the factory. There are many anechoic room orders especially in the busy period. So the lead time of the large anechoic chamber which is over the standard size will be longer.

About Installation

Assembled Semi-anechoic RoomBecause of the prefabrication system, it is possible for a short-term construction on site.

The soundproof panel and frame of an assembled semi-anechoic chamber is manufactured in the factory site and will be assembled at the construction site. Unlike the traditional concrete or board construction, the small size can be manufactured in a few days and the large size can be done in 1 to 2 weeks.

※ we have many overseas export and assembly achievements.

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The specifications are just for reference, customize from scratch.

There are 3 types of specifications for use. But basically, we’ll design from scratch according to the size, measurement method and workability of the user’s acoustic measurement object. We can meet all kinds of requests, such as installing a crane, flattening the bottom of the door so that there is no step when carrying in, controlling temperature and humidity in an anechoic room, and conducting a wind tunnel test.

TypeWedgeEffective (mm)External Dimensions (mm)Price
X-1 without floorHV02WW2000 × L2400 × H2450W2700 × L3100 × H2800Please contact us
X-1 with floorHV02WW2000 × L2400 × H2450W2700 × L3100 × H2900
X-2 without floorHV02WW2400 × L3000 × H2450W3100 × L3700 × H2800
X-2 with floorHV02WW2400 × L3000 × H2450W3100 × L3700 × H2900
X-3 without floorHV02WW3000 × L3600 × H2450W3700 × L4300 × H2800
X-3 with floorHV02WW3000 × L3600 × H2450W3700 × L4300 × H2900
S-1 without floorT-250W2000 × L2400 × H2450W2700 × L3100 × H2800
S-1 with floorT-250W2000 × L2400 × H2450W2700 × L3100 × H2900
S-2 without floorT-250W2400 × L3000 × H2450W3100 × L3700 × H2800
S-2 with floorT-250W2400 × L3000 × H2450W3100 × L3700 × H2900
S-3 without floorT-250W3000 × L3600 × H2450W3700 × L4300 × H2800
S-3 with floorT-250W3000 × L3600 × H2450W3700 × L4300 × H2900
H-1 without floorT-500W2000 × L2400 × H2450W3200 × L3600 × H3050
H-1 with floorT-500W2000 × L2400 × H2450W3200 × L3600 × H3150
H-2 without floorT-500W2400 × L3000 × H2450W3600 × L4200 × H3050
H-2 with floorT-500W2400 × L3000 × H2450W3600 × L4200 × H3150
H-3 without floorT-500W3000 × L3600 × H2450W4200 × L4800 × H3050
H-3 with floorT-500W3000 × L3600 × H2450W4200 × L4800 × H3150
Free typeOther designs: it’s inexpensive out of those specifications. So please contact us

※ without floor is a type of secondary use of the installation place floor.
※ the new semi-anechoic room which is using compact wedge HV02V is type NO. X.
※ An inexpensive semi-anechoic room which is out of the specification can also be manufactured.

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Top-class sound insulation performance is guaranteed.

The unrivaled sound insulation performance of an anechoic room that other companies can never compare.

The background noise in an anechoic room can even reach 0 dB depending on the installation environment. An advanced acoustic measurement space can be realized by introducing our anechoic chambers.

Sound Insulation (Transmission Loss) / dB

Sound Insulation (Transmission Loss) / dB
Hz 63 125 250 500 1K 2K 4K 8K
Guarantee Value of Sound Insulation X (20) 30 36 40 49 53 55 54
S (28) 35 41 45 51 55 57 56
H (32) 40 46 50 56 60 62 61
Actual Value of Sound Insulation X 32.6 49.4 62.4 74.5 77.8 83.1 81.5 81.5
S 33.4 50.3 59.0 63.1 64.9 68.6 78.0 84.2
H 41.9 50.8 60.1 71.3 75.1 77.3 79.9 86.0
About Sound Insulation Performance

We guarantee the sound insulation performance by using a noise signal generator, speaker, general noise meter or precise noise meter, measuring (transmission loss test) according to JISA1417:2000. And submit the test result as a “Measurement Result Report”.

Measurable Range / m

Calculate the Measurable Range
Hz 63 80 100 125 160 200 250
Measurable Range / m X-3 0.28 0.44 0.65 0.87 1.08 1.55 2.71
S-3 0.14 0.17 0.21 0.28 0.40 0.50 0.90
H-3 0.31 0.46 0.74 1.39 2.83 2.83 2.83
zero-tight door: floor flat method

zero-tight door: floor flat method

wind tunnel test facility + semi-anechoic room

wind tunnel test facility + semi-anechoic room

semi-circular birdcage microphone stand for measurement

semi-circular birdcage microphone stand for measurement

Other Specification

・compact wedge HV02W: sound-absorbing wedge thickness 310mm
・Sola metal sound insulation panel: 3TS65
・noncombustible sound insulation wedge T-250: sound-absorbing wedge thickness 250mm
・Sola metal sound insulation panel: 3TS65
・noncombustible sound insulation wedge T-500: sound-absorbing wedge thickness 500mm
・Sola metal sound insulation panel: 3TS65
Request a Blueprint for Details
・single swing soundproof door: inner wall sound absorption layer
・floor panel+ reflecting plate ※except when there is no floor
・vibration isolation layer
・utility pipe diameter 65+ internal and external sound insulation cover
・microphone hanging hook
・air intake diffraction silencer
・exhaust diffraction silencer
・anechoic EA filter
・completed paper( drawings, specifications, etc.)
・bulb type LED lighting
・outlet 100V- 3P- 2 outlets
・indicating light 10w “in use” characters
・sirocco fan + flexible silencer duct
・switch box distribution board
・secondary electric equipment wiring works
・sound insulation volume measurement, report of measurement results
・inverse square measurement, report of measurement results

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  • air conditioning equipment
  • monitor
  • signal light
  • BNC socket
  • interphone
  • various alarm devices
  • fire alarm
  • shockproof design

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  • All anechoic room structural materials are using non-combustible materials
  • Conduct background noise and frequency analysis measurements on the construction site to set the guaranteed value.
  • With completed books( sound-absorbing feature data, design drawing, instruction manual, transmission loss test data)
  • Present a proposal of noise meter or an analyzer.
  • We will change the dimensions of the anechoic chamber and adjust the sound absorption performance as well according to the installation layout.
  • Can be relocated
  • The lead time depends on the operation of the factory, so please contact us.

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Materials Download

Materials Download

You can download the PDF file from here

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CONTACT Contact us by phones


Available from 9:00 a.m. to 17:00 p.m.

Inquiry form

    SHOW ROOMIntroduction of Sonora Showroom

    Sonora Technology, a manufacturer of anechoic chambers and soundproof rooms that providing service all over the country is based in Toyko, Shizuoka, Aichi, Hyogo. We have an in-house integrated system from acoustic measurement, research, diagnosis to design, manufacturing, construction and guarantee. In addition, we have showroom which has anechoic room and soundproof room at “Mt. Fuji Technology Center” in Gotemba city. Using the measuring facility in practice, you can check the high performance of our products while experiencing the unique anechoic space. Besides the showroom, there are videos of the company introduction and you can visit the factory as well. There are almost no institution opening anechoic room for free in Japan. It can also be used outside of business, such as those who are considering purchasing our products, those who are interested in us, the general public and the media, please come by any chance.

    About 15 minutes from Gotemba IC on Tomei Expressway, 1157-332, Hotozawa, Gotemba, Shizuoka, 412-0046
    TEL +81-3-6805-8988 / eFAX +81-3-6740-7875 (common to all branches)

    See more about The Showroom


      All products come with a one-year warranty. And we will immediately deal with any malfunction caused by defects in our design, manufacturing and construction. Furthermore, welcome to contact us for relocation, remodeling and maintenance, etc.

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    CONTACTInquiries and Pamphlet Requests

    About Sonora Technology products, please contact us from the inquiry button for inquiries. If you want the materials by mail, please contact us from the pamphlet request button.