The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature

Until relatively recently, the influence of signal phase on human perception has largely been disregarded. However, findings in the last 20 years have shown that altering the phase characteristics of Schroeder harmonic complexes changes their ability to mask other sounds (Kohlrausch & Sander...

Full description

Bibliographic Details
Main Authors:	Rahmat, Sarah, O'Beirne, Greg A.
Format:	Article
Language:	English
Published:	The Mediterranean Society of Otology and Audiology 2015
Subjects:	Q Science (General)
Online Access:	http://irep.iium.edu.my/49089/ http://irep.iium.edu.my/49089/1/THE_USE_OF_A_FAST_METHOD_FOR_RECORDING_SCHROEDER-PHASE_MASKING_FUNCTIONS_TO_ESTIMATE_COCHLEAR_PHASE_CURVATURE..pdf

id	iium-49089
recordtype	eprints
spelling	iium-490892018-05-21T02:52:00Z http://irep.iium.edu.my/49089/ The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature Rahmat, Sarah O'Beirne, Greg A. Q Science (General) Until relatively recently, the influence of signal phase on human perception has largely been disregarded. However, findings in the last 20 years have shown that altering the phase characteristics of Schroeder harmonic complexes changes their ability to mask other sounds (Kohlrausch & Sander, 1995).The difference in masking produced by different phases of Schroeder complexes is thought to be contributed by the interaction between the phase curvature of the auditory filter and nonlinear cochlear processing. Our aim in this study was to demonstrate the potential use of our newly developed fast method for recording Schroeder-phase masking functions to estimate basilar membrane phase curvature. Schroeder-phase masking functions at 75 dB A masker level were recorded in six normal-hearing participants for 250 Hz, 500 Hz, 1000 Hz, and 2000 Hz using various fundamental frequencies and numbers of masker components. Cochlear phase curvature was estimated from the location of minima in Schroeder-phase masking functions. The estimated auditory filter phase curvature was negative at all tested frequencies, and approached zero as frequency increased. Scaling symmetry was not exhibited for frequencies <500 Hz. Phase curvature estimates at low frequencies contradicted estimates from animal studies, but were consistent with previous Schroeder-phase masking studies in humans (Kohlrausch & Sander, 1995; Oxenham & Dau, 2001; Lentz & Leek, 2001), indicating significant interspecies differences. Our findings suggest that the newly developed fast method of Schroeder-phase masking, with its 80% reduction in test time, may be a useful tool for psychophysical estimation of auditory filter phase curvature. The Mediterranean Society of Otology and Audiology 2015 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/49089/1/THE_USE_OF_A_FAST_METHOD_FOR_RECORDING_SCHROEDER-PHASE_MASKING_FUNCTIONS_TO_ESTIMATE_COCHLEAR_PHASE_CURVATURE..pdf Rahmat, Sarah and O'Beirne, Greg A. (2015) The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature. Journal of International Advanced Otology, 11 (1). p. 58. ISSN 1308-7649
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Rahmat, Sarah O'Beirne, Greg A. The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
description	Until relatively recently, the influence of signal phase on human perception has largely been disregarded. However, findings in the last 20 years have shown that altering the phase characteristics of Schroeder harmonic complexes changes their ability to mask other sounds (Kohlrausch & Sander, 1995).The difference in masking produced by different phases of Schroeder complexes is thought to be contributed by the interaction between the phase curvature of the auditory filter and nonlinear cochlear processing. Our aim in this study was to demonstrate the potential use of our newly developed fast method for recording Schroeder-phase masking functions to estimate basilar membrane phase curvature. Schroeder-phase masking functions at 75 dB A masker level were recorded in six normal-hearing participants for 250 Hz, 500 Hz, 1000 Hz, and 2000 Hz using various fundamental frequencies and numbers of masker components. Cochlear phase curvature was estimated from the location of minima in Schroeder-phase masking functions. The estimated auditory filter phase curvature was negative at all tested frequencies, and approached zero as frequency increased. Scaling symmetry was not exhibited for frequencies <500 Hz. Phase curvature estimates at low frequencies contradicted estimates from animal studies, but were consistent with previous Schroeder-phase masking studies in humans (Kohlrausch & Sander, 1995; Oxenham & Dau, 2001; Lentz & Leek, 2001), indicating significant interspecies differences. Our findings suggest that the newly developed fast method of Schroeder-phase masking, with its 80% reduction in test time, may be a useful tool for psychophysical estimation of auditory filter phase curvature.
format	Article
author	Rahmat, Sarah O'Beirne, Greg A.
author_facet	Rahmat, Sarah O'Beirne, Greg A.
author_sort	Rahmat, Sarah
title	The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
title_short	The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
title_full	The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
title_fullStr	The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
title_full_unstemmed	The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
title_sort	use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature
publisher	The Mediterranean Society of Otology and Audiology
publishDate	2015
url	http://irep.iium.edu.my/49089/ http://irep.iium.edu.my/49089/1/THE_USE_OF_A_FAST_METHOD_FOR_RECORDING_SCHROEDER-PHASE_MASKING_FUNCTIONS_TO_ESTIMATE_COCHLEAR_PHASE_CURVATURE..pdf
first_indexed	2023-09-18T21:09:27Z
last_indexed	2023-09-18T21:09:27Z
_version_	1777411154312691712

The use of a fast method for recording schroeder-phase masking functions to estimate cochlear phase curvature

Similar Items