| A method for evaluating temporal, spectral and combined temporal-spectral resolution of hearing. | |
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MedLine Citation:
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PMID: 9505286 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A method for evaluating the spectral, temporal and combined spectral temporal resolution of hearing is presented; it was used to obtain masked hearing thresholds using the fixed frequency Békéy technique. The masking noise was a broadband random noise with a 3 dB/octave roll off (pink noise). Spectral resolution was assessed by introducing a spectral gap in the masking noise centered at the test tone frequency. Temporal resolution was assessed by introducing temporal gaps, the centre of which coincided in time with the centre of the test tone-pulses. The spectral and temporal gaps were used either separately or simultaneously. Release of masking values were calculated from masked hearing thresholds. One test group comprised 16 normal-hearing subjects, a second group 16 elderly (age 55-75 years) subjects with normal hearing for their age. Temporal gaps were 20, 50 and 100 ms long. Spectral gaps had a bandwidth of 1/10, 1/3, and 1 octave. Each gap or combination of gaps was tested at the frequencies 0.5, 1, 2 and 4 kHz. Release of masking increased with increasing temporal or spectral gaps. If a temporal gap and a spectral gap were combined, the release of masking increased further. Maximum release of masking was obtained with the 100 ms temporal gap combined with the 1 octave notch filter. The overall difference in release of masking between the young and elderly normal-hearing group was 2 dB. |
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Authors:
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B Larsby; S Arlinger |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Scandinavian audiology Volume: 27 ISSN: 0105-0397 ISO Abbreviation: Scand Audiol Publication Date: 1998 |
Date Detail:
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Created Date: 1998-05-21 Completed Date: 1998-05-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0342230 Medline TA: Scand Audiol Country: DENMARK |
Other Details:
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Languages: eng Pagination: 3-12 Citation Subset: IM |
Affiliation:
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Department of Neuroscience and Locomotion, Linköping University, Sweden. Birgitta.Larsby@oto.liu.se |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Aged Audiometry, Pure-Tone Auditory Threshold Female Hearing / physiology* Humans Male Middle Aged Noise Perceptual Masking Time Factors |
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