scholarly journals Investigating the auditory enhancement phenomenon using behavioral temporal masking patterns

2012 ◽  
Vol 132 (5) ◽  
pp. 3363-3374 ◽  
Author(s):  
Yi Shen ◽  
Virginia M. Richards
Keyword(s):  
Auditory Enhancement ◽  
Temporal Masking

scholarly journals On temporal masking by a synthetic vowel on a consonant‐like burst

1976 ◽  
Vol 59 (S1) ◽  
pp. S4-S4
Author(s):  
S. Revoile ◽  
M. P. Wilson ◽  
J. M. Pickett
Keyword(s):  
Temporal Masking

scholarly journals Comparison of Behavioral and Physiological Measures of the Status of the Cochlear Nonlinearity

2021 ◽  
Vol 25 ◽  
pp. 233121652110161
Author(s):  
Michal Fereczkowski ◽  
Torsten Dau ◽  
Ewen N. MacDonald
Keyword(s):  
Otoacoustic Emissions ◽  
Hearing Impaired ◽  
Good Correspondence ◽  
Cochlear Nonlinearity ◽  
Temporal Masking ◽  
The Status ◽  
Peripheral Compression ◽  
Two Measures ◽  
Peripheral Nonlinearity ◽  
Fitting In

While an audiogram is a useful method of characterizing hearing loss, it has been suggested that including a complementary, suprathreshold measure, for example, a measure of the status of the cochlear active mechanism, could lead to improved diagnostics and improved hearing-aid fitting in individual listeners. While several behavioral and physiological methods have been proposed to measure the cochlear-nonlinearity characteristics, evidence of a good correspondence between them is lacking, at least in the case of hearing-impaired listeners. If this lack of correspondence is due to, for example, limited reliability of one of such measures, it might be a reason for limited evidence of the benefit of measuring peripheral compression. The aim of this study was to investigate the relation between measures of the peripheral-nonlinearity status estimated using two psychoacoustical methods (based on the notched-noise and temporal-masking curve methods) and otoacoustic emissions, on a large sample of hearing-impaired listeners. While the relation between the estimates from the notched-noise and the otoacoustic emissions experiments was found to be stronger than predicted by the audiogram alone, the relations between the two measures and the temporal-masking based measure did not show the same pattern, that is, the variance shared by any of the two measures with the temporal-masking curve-based measure was also shared with the audiogram.

scholarly journals Perceptual Weighting of Binaural Lateralization Cues across Frequency Bands

2020 ◽  
Vol 21 (6) ◽  
pp. 485-496
Author(s):  
Axel Ahrens ◽  
Suyash Narendra Joshi ◽  
Bastian Epp
Keyword(s):  
Auditory System ◽  
Phase Locking ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Low Frequencies ◽  
Frequency Bands ◽  
Relative Contribution ◽  
Highest Weight ◽  
Auditory Enhancement ◽  
Spectral Weighting

Abstract The auditory system uses interaural time and level differences (ITD and ILD) as cues to localize and lateralize sounds. The availability of ITDs and ILDs in the auditory system is limited by neural phase-locking and by the head size, respectively. Although the frequency-specific limitations are well known, the relative contribution of ITDs and ILDs in individual frequency bands in broadband stimuli is unknown. To determine these relative contributions, or spectral weights, listeners were asked to lateralize stimuli consisting of eleven simultaneously presented 1-ERB-wide noise bands centered between 442 and 5544 Hz and separated by 1-ERB-wide gaps. Either ITDs or ILDs were varied independently across each noise band, while fixing the other interaural disparity to either 0 dB or 0 μs. The weights were obtained using a multiple linear regression analysis. In a second experiment, the effect of auditory enhancement on the spectral weights was investigated. The enhancement of single noise bands was realized by presenting ten of the noise bands as preceding and following sounds (pre- and post-cursors, respectively). Listeners were asked to lateralize the stimuli as in the first experiment. Results show that in the absence of pre- and post-cursors, only the lowest or highest frequency band received highest weight for ITD and ILD, respectively. Auditory enhancement led to significantly enhanced weights given to the band without the pre- and post-cursor. The weight enhancement could only be observed at low frequencies, when determined with ITD cues and for low and high frequencies for ILDs. Hence, the auditory system seems to be able to change the spectral weighting of binaural information depending on the information content.

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