Target enhancement and noise cancellation in the identification of a rudimentary sound source in noise

Perturbation analysis was used to determine the relative contribution of target enhancement and noise cancellation in the identification of rudimentary sound source in noise. In a two-interval, forced-choice procedure, listeners identified the impact sound produced by the larger of two stretched mem...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2011-02, Vol.129 (2), p.EL52-EL56
Main Authors: Lutfi, Robert A., Liu, Ching-Ju
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Audition
Auditory Pathways - physiology
Auditory Perception
Auditory Threshold
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Humans
Jasa Express Letters
Noise - adverse effects
Perception
Perceptual Masking
Psychoacoustics
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Signal Detection, Psychological
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Summary:Perturbation analysis was used to determine the relative contribution of target enhancement and noise cancellation in the identification of rudimentary sound source in noise. In a two-interval, forced-choice procedure, listeners identified the impact sound produced by the larger of two stretched membranes as target. The noise on each presentation was the impact sound of a variable-sized plate. For four of five listeners, the relative weights on the noise were positive indicating enhancement, and for the remaining listeners, they were negative indicating cancellation. The results underscore the difficulty with evaluating models of masking solely in terms of measures of performance accuracy.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3533000