In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 103, No. 5_Supplement ( 1998-05-01), p. 3052-3052
Abstract:
The portable digital hearing aid system CLAIDHA (compensate loudness by analyzing input signal digital hearing aid), which employs frequency-dependent amplitude compression based on narrow-band compensation, has been developed [Asano et al. (1991)]. The patients with hearing loss using hearing aids experience a new sound world as amplified by the device. It seems to be important to know the apparent change of hearing function by the use of a hearing aid. In the present study, the apparent effects of CLAIDHA amplification especially on the intensity discriminability and the masking function were examined in the patients with hearing loss. The results obtained indicate that the CLAIDHA amplification often improves not only the apparent thresholds but also the apparent masking relation between two tones as compared to simple linear amplification; i.e., in the CLAIDHA amplification, more signals could be heard under the same masking condition. On the other hand, from the viewpoint of intensity discriminability, when the compression ratios of the amplification were larger than two, the IDL (intensity difference limen) rapidly increased more than expected. The advantage of the compressive amplification of the CLAIDHA system will be discussed.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1998
detail.hit.zdb_id:
1461063-2
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