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  HEAD acoustics worldwide first supplier of 3GPP Release 11 test platform validated by GCF
HEAD Press Release Herzogenrath (Germany), December 2013
HEAD acoustics worldwide first supplier of 3GPP Release 11 test platform validated by GCF
Since October 2013 HEAD acoustics has globally been the first (and currently still is the only) supplier of a GCF-validated test platform (TP 90) for Release 11 of the important 3GPP specifications TS 26.131 and TS 26.132.
Experts agree that Release 11 of the 3GPP specifications constitutes a milestone in the global standardization of wideband telecommunication devices. Compared to Release 10, important modifications and extensions were applied in order to establish a close-to-reality and forward-looking specification:
3QUEST is required: Quality (speech quality, noise intrusiveness) in the presence of ambient noise. The speech quality in sending for narrowband and wideband systems is tested based on
ETSI TS 103 106. This test method leads to three MOS-LQO quality numbers (MOS: Mean Opinion Score; LQO: Listening Quality Objective):
- N-MOS-LQO: Transmission quality of background noise
- S-MOS-LQO: Transmission quality of speech
- G-MOS-LQO: Overall transmission quality
Real speech test signals (British-English single talk sequence acc. to ITU-T Rec. P.501) are used for the following measurements:
- frequency response
- loudness rating
- sidetone loss
- acoustic echo control (compressed real speech signal)
- ambient noise (+1.3 dBPa)
- stability loss
Furthermore, the new revision of the HEAD acoustics measurement standard TS 26131_32 which forms part of the GCF-validated test platform TP90 already contains an implementation of Release 12 (Version 12.0.0, 2013-06). For example, additional receiving distortion measurements according to this new release have been implemented. In addition, the new calculation method of echo control characteristics according to Release 12 is optionally available (ACOPT 32, “Speech based double talk”, Code 6859).
The new GCF-validated revision of the measurement standard is immediately available for HEAD acoustics customers by download. It requires the communication analysis system ACQUA with ACOPT 21 (3QUEST), the corresponding standard license, the background noise simulation system HAE-BGN as well as several other HEAD acoustics system components.
For more details on system requirements, delivery times and prices, please contact the HEAD acoustics Telecom sales team via
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:
HEAD acoustics was founded in 1986 and has been involved in noise and vibration, electroacoustics and voice quality testing since its inception. HEAD acoustics is based in Herzogenrath, Germany, with affiliates in USA, Japan and France 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, TIA 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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Ebertstraße 30a
52134 Herzogenrath

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