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The perceptual enhancement of tones by frequency shifts

Demany, Laurent and Carcagno, Samuele and Semal, Catherine (2013) The perceptual enhancement of tones by frequency shifts. Hearing Research, 298. pp. 10-16. ISSN 0378-5955

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Abstract

In a chord of pure tones with a flat spectral profile, one tone can be perceptually enhanced relative to the other tones by the previous presentation of a slightly different chord. "Intensity enhancement" (IE) is obtained when the component tones of the two chords have the same frequencies, but in the first chord the target of enhancement is attenuated relative to the other tones. "Frequency enhancement" (FE) is obtained when both chords have a flat spectral profile, but the target of enhancement shifts in frequency from the first to the second chord. We report here an experiment in which IE and FE were measured using a task requiring the listener to indicate whether or not the second chord included a tone identical to a subsequent probe tone. The results showed that a global attenuation of the first chord relative to the second chord disrupted IE more than FE. This suggests that the mechanisms of IE and FE are not the same. In accordance with this suggestion, computations of the auditory excitation patterns produced by the chords indicate that the mechanism of IE is not sufficient to explain FE for small frequency shifts.

Item Type: Journal Article
Journal or Publication Title: Hearing Research
Uncontrolled Keywords: Acoustic Stimulation ; Adaptation, Psychological ; Adult ; Audiometry, Pure-Tone ; Auditory Pathways ; Computer Simulation ; Female ; Humans ; Male ; Middle Aged ; Pitch Perception ; Psychoacoustics ; Sound Spectrography ; Time Factors ; Young Adult
Subjects:
Departments: Faculty of Science and Technology > Psychology
ID Code: 68504
Deposited By: ep_importer_pure
Deposited On: 07 Feb 2014 11:04
Refereed?: Yes
Published?: Published
Last Modified: 21 Aug 2018 04:27
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/68504

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