Hearing impairment and the masking‐level difference in wideband and narrow‐band masking noise

1984 ◽  
Vol 75 (S1) ◽  
pp. S6-S6
Author(s):  
Joseph W. Hall ◽  
Mark P. Haggard ◽  
Anthony D. G. Harvey
Keyword(s):  
Hearing Impairment ◽  
Narrow Band ◽  
Level Difference ◽  
Masking Level Difference ◽  
Masking Noise

Factors Influencing the Masking Level Difference in Cochlear Hearing-Impaired and Normal-Hearing Listeners

1984 ◽  
Vol 27 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Joseph W. Hall ◽  
Richard S. Tyler ◽  
Mariano A. Fernandes
Keyword(s):  
Narrow Band ◽  
Wide Band ◽  
Normal Hearing ◽  
Temporal Coding ◽  
Hearing Impaired ◽  
Frequency Resolution ◽  
Time Discrimination ◽  
Band Noise ◽  
Level Difference ◽  
Masking Level Difference

The masking level difference (MLD) at 500 Hz was examined in wide-band (960 Hz) and narrow-band (50 Hz) noise for normal-hearing subjects and subjects with symmetrical mild-to-moderate cochlear hearing loss. Monaural tasks of intensity discrimination, temporal resolution, and frequency resolution were performed in order to examine relationships between monaural dysfunction and MLD performance. Interaural time discrimination for a 500-Hz pure tone also was examined. The performance of the hearing-impaired subjects was poorer than that of the normal-hearing subjects for MLD, interaural Δt, and most monaural tasks. However, no significant relationships were found between monaural and MLD performance when effects of threshold were taken into account. MLDs were more reduced in wide-band noise than in narrow-band noise for the hearing-impaired subjects (when Contrasted with normal-hearing subjects). MLD performance was correlated with interaural time discrimination, and it is suggested that one reason for poor MLD performance with hearing impairment may be poor temporal coding of stimulus-fine structure.

The effect of diotic and dichotic level-randomization on the binaural masking-level difference

2005 ◽  
Vol 118 (5) ◽  
pp. 3229-3240 ◽  
Author(s):  
G. Bruce Henning ◽  
Virginia M. Richards ◽  
Jennifer J. Lentz
Keyword(s):  
Level Difference ◽  
Masking Level Difference

scholarly journals Masking Level Difference and Electrophysiological Evaluation in Adults with Normal Hearing

2020 ◽  
Vol 24 (04) ◽  
pp. e399-e406
Author(s):  
Joyce Miranda Santiago ◽  
Cyntia Barbosa Laureano Luiz ◽  
Michele Garcia ◽  
Daniela Gil
Keyword(s):  
Auditory Processing ◽  
Auditory Evoked Potentials ◽  
Normal Hearing ◽  
Central Auditory Processing ◽  
Positive Correlation ◽  
Binaural Interaction ◽  
Level Difference ◽  
Significant Difference ◽  
Masking Level Difference ◽  
The Mean

Abstract Introduction The auditory structures of the brainstem are involved in binaural interaction, which contributes to sound location and auditory figure-background perception. Objective To investigate the performance of young adults in the masking level difference (MLD) test, brainstem auditory-evoked potentials (BAEPs) with click stimulus, and frequency-following response (FFR), as well as to verify the correlation between the findings, considering the topographic origin of the components of these procedures. Methods A total of 20 female subjects between 18 and 30 years of age, with normal hearing and no complaints concerning central auditory processing underwent a basic audiological evaluation, as well as the MLD test, BAEP and FFR. Results The mean result on the MLD test was of 10.70 dB. There was a statistically significant difference in the absolute latencies of waves I, III and V in the BAEPs of the ears. A change in the FFR characterized by the absence of the C, E and F waves was noticed. There was a statistically significant difference in the positive correlation of wave V in the BAEPs with the MLD. There was a statistically significant difference in the positive correlation of the mean MLD and the V, A and F components of the FFR. Conclusion The mean MLD was adequate. In the BAEPs, we observed that the click stimulus transmission occurred faster in the right ear. The FFR showed absence of some components. The mean MLD correlated positively with the BAEPs and FFR.

A masking‐level difference in time (MLDT)

1982 ◽  
Vol 71 (S1) ◽  
pp. S37-S37
Author(s):  
Roy D. Patterson ◽  
Robert Milroy
Keyword(s):  
Level Difference ◽  
Masking Level Difference
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