anechoic chambers and noise control products and systems
a worldwide noise control company
A Worldwide Noise Control Company
Anechoic Chambers & Other Noise Control Products and Systems
Anechoic Chambers and Audiometry Rooms
Anechoic Chambers and Audiometry Rooms anechoic chambers home Anechoic Chambers and Audiometry Rooms
Anechoic Chambers and Audiometry Rooms
anechoic chambers and audiometric rooms
Anechoic Chambers and Audiometry Rooms
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Anechoic Chambers and Audiometry Rooms
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Related Sites

  Noise Control  
  Audiology Rooms  
  Noise at Work  
  School Acoustics  
  Impact Traffic Doors  

ISO 9001

Designing & Manufacturing Anechoic Chambers for over 50 years

Bosch Article

bosch anechoic chamber


We have just completed construction of a hemi-anechoic chamber, which will be used for testing our new VPV Whisper Pumps, as well as small power units and other BOSCH products. The sound chamber will allow us to measure and improve the noisy characteristics of our products not only for sound levels, but also for sound quality, by incorporating design modifications before the final product is released. In addition we can accurately compare our products against our competitors in a controlled environment with very low ambient noise.

The inside dimensions of the chamber are 4.2m x 3.9m x 3.5m (14' x 13' x 11.5') wedge tip to wedge tip, and although it was designed with 100Hz cut-off frequency, a qualification test by ECKEL indicated that the chamber has 63Hz cut-off frequency. The chamber is constructed with metal perforated wedges filled with fibrous material for better performance. The chamber is built on an isolated concrete slab, in order to isolate any vibrations transmitted from the surroundings. A climate control unit provides a controlled interior room environment with a constant temperature and relative humidity level. An observation system with a color monitor and a two way intercom system provides a remote communication between the operator inside the room and the person acquiring the data outside. In addition the observation/intercom system provides remote monitoring during the test. Provisions were made for easy removal of the pump test bed and support in order to accommodate even the large power units.

A multi channel data acquisition FFT analyzer (ZONIC PC7000) is used for performing noise and vibration measurements and analysis.

The chamber was built by ECKEL, a company which specializes in building anechoic chambers. The chamber utilizes the latest technology in anechoic chamber construction and provides the a state of the art facility for noise and vibration testing and evaluation. The development of this chamber illustrates our desire to provide our customers with only the highest quality products. For more information about our new whisper Pump product line, you may refer to our vain pump catalog number 9 535 233 724.

Chamber currently being relocated from USA to Germany
Eckel make it possible
Tel: +44 (0) 1276 471199 - Fax: +44 (0) 1276 453333
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