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  New Release of Important 3GPP Standard Implemented by HEAD acoustics
HEAD Press Release Herzogenrath, December 20, 2012
New Release of Important 3GPP Standard Implemented by HEAD acoustics
The 3GPP standards TS 26.131 and TS 26.132 have again undergone a major revision that led to the recent publication of Release 11 of both standards. HEAD acoustics is the first test solution provider to have implemented Release 11.
Experts agree that Release 11 of the 3GPP standards constitutes an important step forward in the global standardization of wideband-capable telecommunication devices including LTE terminals. Many measurements have been modified in order to establish a close-to-reality and forward-looking standard:
3QUEST is now part of the standard.
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-LQOn quality numbers:
- N-MOS-LQOn: Transmission quality of the background noise
- S-MOS-LQOn: Transmission quality of the speech
- G-MOS-LQOn: Overall transmission quality (not required in TS 26.131)
Real speech test signals (British-English single talk sequence acc. to ITU-T Rec. P.501) are now 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
The new measurement standard is immediately available for HEAD acoustics customers by download. It requires the new ACQUA version 3.1.200 with ACOPT 21 (3QUEST) and the corresponding standard license as well as several other HEAD acoustics system components.
For more details on system requirements, availability and prices, please contact the HEAD acoustics Telecom sales team via
Steffen Scholz
HEAD acoustics GmbH
Ebertstr. 30a,
D-52134 Herzogenrath
Phone: +49 (0) 2407 577 744
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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