Descriptors of sound quality for normal-hearing subjects
Dolter, Clare M.
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The purpose of this study was to identify a set of orthogonal descriptors of sound quality. One hundred normal-hearing college students listened to one spoken and nine musical stimuli. Each stimulus was rated on 15 Lykert scales of 0 to 51, each with six gradations. Ratings were made according to the subject?s impression of the stimulus in terms of the various sound-quality descriptors. Factor analysis of data from all ratings resulted in the extraction of three principal components, comprising 89.83% of the total variance. By analyzing the descriptors belonging to the three factors, Factor 1 was interpreted to be a rating of loudness, Factor 2 was interpreted to be a rating of clarity, and Factor 3 was interpreted to be a rating of comfort. Analysis of data by type of listening material was also performed, yielding three to five factors accounting for less variance.