White Paper

*This document is a summary report. For full description of listening test, please refer to the document
“‘SenseLab 005-13”.
The report must not be reproduced, except in full, without the written approval of DELTA.
Figure 2 Uplink Mean Score Ratings (including 95-percent confidence intervals) for
the Three Test Questions Related to Distortion of Speech Signal, Level of Back-
ground Noise, and Overall Quality Averaged Across the Three Test Locations and
Languages and Experiment Conditions