| Excitation-based and informational masking of a tonal signal in a four-tone masker. | |
| | |
MedLine Citation:
|
PMID: 20370027 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This study examined contributions of peripheral excitation and informational masking to the variability in masking effectiveness observed across samples of multi-tonal maskers. Detection thresholds were measured for a 1000-Hz signal presented simultaneously with each of 25, four-tone masker samples. Using a two-interval, forced-choice adaptive task, thresholds were measured with each sample fixed throughout trial blocks for ten listeners. Average thresholds differed by as much as 26 dB across samples. An excitation-based model of partial loudness [Moore, B. C. J. et al. (1997). J. Audio Eng. Soc. 45, 224-237] was used to predict thresholds. These predictions accounted for a significant portion of variance in the data of several listeners, but no relation between the model and data was observed for many listeners. Moreover, substantial individual differences, on the order of 41 dB, were observed for some maskers. The largest individual differences were found for maskers predicted to produce minimal excitation-based masking. In subsequent conditions, one of five maskers was randomly presented in each interval. The difference in performance for samples with low versus high predicted thresholds was reduced in random compared to fixed conditions. These findings are consistent with a trading relation whereby informational masking is largest for conditions in which excitation-based masking is smallest. |
| | |
Authors:
|
Lori J Leibold; Jack J Hitchens; Emily Buss; Donna L Neff |
Related Documents
:
|
2745877 - Stimulus dependencies of the gerbil brain-stem auditory-evoked response (baer). ii: eff... 16973317 - Asymmetry of masking in the european starling: behavioural auditory thresholds. 2756337 - Masked threshold changes associated with angular separation of noise and signal sources. 8725517 - Ipsilateral suppression of transient evoked otoacoustic emission: role of the medial ol... 19075327 - Mandible, maxilla and cervical spine--a functional unit? 16811497 - Control of concurrent avoidance and appetitive behaviors by an indicator of shock proxi... |
Publication Detail:
|
Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Apr |
Date Detail:
|
Created Date: 2010-04-07 Completed Date: 2010-07-06 Revised Date: 2012-01-09 |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 2441-50 Citation Subset: IM |
Affiliation:
|
Department of Allied Health Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. leibold@med.unc.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Adult Audiometry Auditory Threshold Humans Loudness Perception* Models, Biological Perceptual Masking* Pitch Perception* Signal Detection, Psychological* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
|
R01 DC007391/DC/NIDCD NIH HHS; R01 DC007391-07/DC/NIDCD NIH HHS; R03 DC008389/DC/NIDCD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The loudness of sounds whose spectra differ at the two ears.
Next Document: The origin of binaural interaction in the modulation domain.