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HEAD Press Release Herzogenrath (Germany), March 15, 2014
SQuare for fans
ebm-papst commissions an exemplary listening and conference room
Apart from the automotive industry and its suppliers, markets outside of this industry are also interested in “soft” factors, such as sound quality. However, quality assurance in this area requires subjective judgments by test subjects. Consequently, listening tests have become an important basis for assessing the sound quality of products. A well-rounded soundscape significantly influences the satisfaction and buying decision of a customer. ebm-papst, the leading innovator in the area of fans and motors, has extended its already exemplary testing facilities for fan optimization with a newly designed listening room for the evaluation of noise, and is thus leading the way in the industry.
For these facilities, ebm-papst has created a professional environment in the style of a representative conference room, which allows employees and customers to work in a concentrated and effective manner. Excellent sound insulation and ultra-quiet air conditioning work effectively to exclude any noise distractions. The resulting acoustic qualities provide a pleasant atmosphere not only for talks, but also for presentations with loudspeakers, which were selected and installed based on recommendations from HEAD acoustics.
The eight networked workplaces feature touchscreen terminals. Presentations and listening tests are controlled centrally from the test supervisor’s workplace. The required examinations are conducted with the software SQuare, which is installed on each computer. In tests with groups and individuals, the acoustic characteristics of a product are examined with the aim of determining the optimal acoustic image. The correlation of the subjective test results with psychoacoustic analyses allows the creation of metrics for predicting the subjective judgment of products with similar acoustic properties.
For an authentic playback of the sounds during the listening tests, each workplace is equipped with high-end headphones and a programmable digital equalizer (PEQ V) for aurally accurate equalization and level adaptation. The loudspeakers, in combination with the room acoustics and the integrated calibrated equalization routine, are also suitable for the authentic playback of slow run-ups and run-downs; and in headphone operation, the loudspeakers can serve as optional subwoofers providing listeners with additional structure-borne sound perception to resemble the real situation.
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Source:
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, Internet:    www.ebmpapst.com
Contact:
Marketing NVH
HEAD acoustics GmbH
Ebertstrasse 30a,
52134 Herzogenrath
Germany
Tel.: +49 (0) 2407 577-7806
Fax: +49 (0) 2407 577-99
E-Mail:    Marketing-NVH@head-acoustics.de
About HEAD acoustics GmbH:
HEAD acoustics has developed into one of the world's leading specialists in the fields of sound and vibration analyses and optimization. For more than 25 years HEAD acoustics has developed products and solutions for artificial head recording and playback technology, exceptional acquisition and analysis software and techniques, and communication measurement technology.
   
 
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Ebertstraße 30a
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Germany

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