Two listening test methods in common use for the subjective assessment of audio quality are the ITU-R recommendations BS.1116 for small impairments and BS.1534 (MUSHRA) for intermediate quality. They stipulate the usage of only critical audio stimuli (BS.1116) to reveal differences among systems under test, or critical audio stimuli which represents typical audio material in a specific application context (MUSHRA). An elaboration of the notion critical would be beneficial as a basis for an explicit systematic procedure for the selection of audio stimuli. The selection work is time-consuming, and a poor selection can cause experimental insensitivity and introduce bias. This paper reviews and discusses the selection of audio stimuli in listening test-related studies.
Ekeroot, Jonas; Berg, Jan; Nykänen, Arne
Affiliations: Luleå University of Technology, Luleå, Sweden; Luleå University of Technology, Piteå, Sweden(See document for exact affiliation information.)
AES Convention: 130 (May 2011) Paper Number: 8445
Publication Date: May 13, 2011
Subject: Subjective Evaluation
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