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ETSI - TR 102 506

Speech and multimedia Transmission Quality (STQ); Estimating Speech Quality per Call

active, Most Current
Organization: ETSI
Publication Date: 1 August 2011
Status: active
Page Count: 44
scope:

The present document proposes a way to model measurement results on a per sample basis that allow to estimate the perceived end-to-end speech quality per call for narrowband circuit switched voice services in mobile networks.

It focuses on speech (listening) quality of a voice call. Speech quality per call calculation determines the speech quality separate per each direction of the call. Conversational properties such as talker quality, round trip and other related metrics are not considered. Speech Quality of video telephony is not considered either.

The scenario is focussing on test signals between 60 seconds and 120 seconds in duration with alternating speech/silence periods as described in clause 5. The presented model is based on three studies but may not generalize to other call scenarios than those used in the underlying studies.

Throughout the present document where ITU-T Recommendation P.862.1 [i.2] (or ITU-T Recommendation P.862 [i.1]) is quoted the same applies to all measurements of listening quality. This can be listening quality scores gained by auditory tests (MOS-LQS) or objective measurements predicting MOS-LQO according to ITU-T Recommendation P.800.1 [i.3] covering the relevant network distortions and speech processing components in their scope.

Document History

TR 102 506
August 1, 2011
Speech and multimedia Transmission Quality (STQ); Estimating Speech Quality per Call
The present document proposes a way to model measurement results on a per sample basis that allow to estimate the perceived end-to-end speech quality per call for narrowband circuit switched voice...
July 1, 2010
Speech and multimedia Transmission Quality (STQ); Estimating Speech Quality per Call
The present document proposes a way to model measurement results on a per sample basis that allow to estimate the perceived end-to-end speech quality per call for narrowband circuit switched voice...
November 1, 2007
Speech Processing, Transmission and Quality Aspects (STQ); Estimating Speech Quality per Call
The present document proposes a way to model measurement results on a per sample basis that allow to estimate the perceived end-to-end speech quality per call for narrowband circuit switched voice...
January 1, 2007
Methods for Testing and Specification (MTS); URI name space for TTCN-3
The present document defines the structure for the URI name space for TTCN-3 specifications provided by ETSI MTS.
October 1, 2006
Speech Processing, Transmission and Quality Aspects (STQ); Estimating Speech Quality per Call
The present document proposes a way to model measurement results on a per sample basis that allow to estimate the perceived end-to-end speech quality per call for narrowband circuit switched voice...

References

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