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Comparison between the discrete ACR scale and an extended continuous scale for the quality assessment of transmitted speech
Citation key koester2015a
Author Köster, Friedemann and Guse, Dennis and Wältermann, Marcel and Möller, Sebastian
Title of Book Fortschritte der Akustik – DAGA 2015: Plenarvortr. u. Fachbeitr. d. 41. Dtsch. Jahrestg. f. Akust.
Pages 150–153
Year 2015
ISBN 978-3-939296-08-9
Location Nürnberg, DE
Address Berlin
Month mar
Note another medium
Publisher DEGA
How Published full
Abstract In this contribution the properties of quality ratings as obtained on a continuous and extended scale are investigated and a functional relation to the ITU-T P.800 Absolute Category Rating (ACR) scale is derived. Therefore, two auditory experiments were conducted in which narrowband and wideband conditions were rated on both the extended continuous and the ACR scale. It turned out that the main benefit of the extended continuous scale is the increased sensitivity, especially for conditions of lower quality. This fact renders the continuous scale attractive for wideband or beyond-wideband experiments, where only a reduced area of the rating scale is available for low-quality conditions (e.g., narrowband conditions).
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