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HEAD Press Release Herzogenrath (Germany), May 04, 2016
Accurate Background Noise simulation to truly stress your product and algorithms
How do you measure the true performance of your noise suppression algorithms? For over a decade, HEAD acoustics has offered a standardized solution for measuring the speech quality performance in the presence of background noise (BGN). That BGN system, compliant with ETSI ES 202 396-1, relied on equalizing the sound field using a binaural setup and gave a great level and frequency reproduction of a measured noise field.
In the last few years, HEAD acoustics has been pioneering a new BGN system, 3PASS, which takes multi-microphone arrangements in modern consumer electronics devices into account. The 3PASS system was approved as ETSI standard TS 103 224 in August 2014.
If you design and manufacture voice-controlled speakers, multi-microphone hand held communication devices, headsets with Active Noise Cancellation, etc. the 3PASS system allows you to record and playback any sound field that is representative of your typical use case, and therefore gauge how well your product performs in real world conditions.
The 3PASS system offers:
true spatial reproduction of the recording
accurate level and frequency reproduction
Fast and more consistent equalization for the system
Four independent labs, tested 7 different devices in 6 different background noise scenarios, and compared their measurements between the older BGN system and the new 3PASS. In all cases, we saw improvements using the new 3PASS system (see attached images).
  Correlation of N-MOS-Values between two different rooms for different DUTs and different background noises

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  Spectra of cafeteria noise recorded at location of DUT in two different rooms and different DUTs

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For immediate release. In case of publication please notify and/or provide printed copy!
Steffen Scholz
HEAD acoustics GmbH
Ebertstr. 30a,
D-52134 Herzogenrath
Phone: +49 (0) 2407 577 0
Fax: +49 (0) 2407 577 99
About HEAD acoustics GmbH – Telecom Division:
HEAD acoustics was founded in 1986 and has been involved in noise and vibration, electroacoustic and voice quality testing since its inception. HEAD acoustics is based in Herzogenrath, Germany, with affiliates in USA, Japan, France and Great Britain as well as a world-wide network of representatives. The Telecom Division of HEAD acoustics manufactures telecom test equipment and provides consulting services in the field of speech and audio quality. Moreover, HEAD acoustics closely co-operates with DECT Forum, ETSI,  ITU-T, 3GPPP, TIA CTIA, GSMA and other standardization bodies with regard to the development of quality standards for voice transmission and speech communication. In many partnership projects, HEAD acoustics has proven its competence and capabilities in conducting tests and optimizing communication products with respect to speech and audio quality under end-to-end as well as mouth-to-ear scenarios.
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