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Convention Paper

Revision of Rec. ITU-R BS.1534

Authors: Liebetrau, Judith; Nagel, Frederik; Zacharov, Nick; Watanabe, Kaoru; Colomes, Catherine; Crum, Poppy; Sporer, Thomas; Mason, Andrew

AES Convention 137 · Paper 9172 · October 2014

Abstract

In audio quality evaluation, ITU-R BS.1534-1, commonly known as MUSHRA, is widely used for the subjective assessment of intermediate audio quality. Studies have identified limitations of the MUSHRA methodology [1][2], which can influence the robustness to biases and errors introduced during the testing process. Therefore ITU-R BS.1534 was revised to reduce the potential for introduction of systematic errors and biases in the resulting data. These modifications improve the validity and the reliability of data collected with the MUSHRA method. The main changes affect the post screening of listeners, the inclusion of a mandatory mid-range anchor, the number and length of test items as well as statistical analysis. In this paper the changes and reasons for modification are given.

Details

Published in
AES Convention 137
AES Convention
137
Paper number
9172
Publication date
October 6, 2014
Session subject
Perception
Affiliation
Fraunhofer IDMT, Ilmenau, Germany; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; International Audio Laboratories, Erlangen, Germany; DELTA SenseLab, Iisalmi, Finland; NHK Science and Technology Research Labs., Setagaya-ku, Tokyo, Japan; Orange Labs, Cesson Sevigné, France; Dolby Laboratories, San Francisco, CA, USA; BBC Research and Development, London, UK (See document for exact affiliation information.)
Type
Convention Paper