Comparison of magnitude estimation and interval scaling of loudness

Author(s): Fucci, D.

Journal/Book: Percept Mot Skills. 1999; 88: PO Box 9229, Missoula, MT 59807, USA. Perceptual Motor Skills. 25-30.

Abstract: To identify whether equal-appearing interval or magnitude estimation scaling resulted in a data set with a closer correlation to the physical stimuli involved 20 young adults completing two tasks. In Task 1 subjects used a 7-point equal-appearing interval loudness of 18 10-sec. Samples of babble speech, presented randomly at intensities of 5 to 90 dB SPL. Ln Task 2 subjects used magnitude estimation scaling to rate these stimuli, presented in a randomized order. Analysis showed significantly high correlations for Loth scaling methods and the stimuli (Spearman rho=1.00 and .99, respectively). Subjects can use either form of scaling to rare changes in loudness.

Note: Article McColl D, Ohio Univ, Sch Hearing & Speech Sci, Lindley Hall 206, Athens,OH 45701 USA

Keyword(s): COMPLEX AUDITORY-STIMULI; YOUNG-ADULTS

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