User-Orientated Subjective Quality Assessment in the Case of Simultaneous Interpreters

摘要

A study was conducted to explore various subjective quality aspects of audio-visual systems for interpreters. The study was designed to bring existing requirements for on-site simultaneous interpretation up-to-date and to specify new requirements for interpretation of remote participants in teleconferencing. The feasibility of using objective measurement methods in this context was examined. Several parameters influencing perceived quality, such as audio coding, video coding, room characteristics, and audio-visual latency were assessed. The results obtained are partially contradictory to previous studies. This leads to the conclusion that perceived quality is strongly linked to the focus, background, and abilities of the assessors. The test design, realization, and obtained results are shown, as well as a comparison to studies with different types of users.