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Speech Quality Assessment for Wideband Systems

Authors:
Gierlich, H. W. ,  Völl, S. ,  Jax, P. ,  Kettler, F.
Book Title:
Proceedings of German Annual Conference on Acoustics (DAGA)
Address:
Munich, Germany
Date:
Mar. 2005
Language:
English

Abstract

The integration of wideband communication for future telecommunication systems is of critical importance. Without wideband communication Voice over IP-configurations and future wireless systems might not be able to differentiate from traditional speech services. Besides the use of speech coders already standardized (AMR-WB [5], ITU-T G.722 [1]) bandwidth extension procedures maybe introduced in order to “virtually” increase the perceived bandwidth of the signal. Wideband systems will introduce specific distortions and artefacts which mainly may influence the one way listening speech quality. Furthermore, echo disturbances and background noise are transmitted over the wideband channel. Speech quality determination is more complex than in narrowband systems and needs to consider the different perception of the communication transmitted over the wideband channel. Objective measurements are currently investigated in order to provide appropriate analysis tools for wideband scenarios accordingly. The contribution discusses parameters, testing and analysis methods with focus on the transmission quality of background noise.

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