ETSI EG 201 377-1 V1.2.1 (2002-12)
ETSI EG 201 377-1 V1.2.1 (2002-12)ETSI Guide
Speech processing, Transmission and Quality aspects (STQ);
Specification and measurement of
speech transmission quality;
Part 1: Introduction to objective comparison measurement
methods for one-way speech quality across networks
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