Abstract
Objectives
Methods
Results
Conclusion
ACKNOWLEDGMENTS
References
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Fig. 1
Hearing threshold setting for both the HLS-1 and HLS-2 that simulates severe hearing loss in the high-frequency region. HLS, hearing loss simulator.
![ceo-8-102-g001](/upload/SynapseXML/0141ceo/thumb/ceo-8-102-g001.jpg)
Fig. 2
Measurements of the HLS-2 bandwidth when a 1-kHz pure-tone sine wave was entered into HLS-2 and the values of the smearing parameter were adjusted from 0.0 to 3.0 at 0.5 intervals. HLS, hearing loss simulator.
![ceo-8-102-g002](/upload/SynapseXML/0141ceo/thumb/ceo-8-102-g002.jpg)
Fig. 3
Schematics of the combinations of testing algorithms: (A) TAC1. (B) TAC2. Comp., frequency compression; Comb-L, odd-band comb filter; Comb-R, even-band comb filter; WDRC, wide dynamic range compression; HLS, hearing loss simulator; TAC, testing algorithm combination.
![ceo-8-102-g003](/upload/SynapseXML/0141ceo/thumb/ceo-8-102-g003.jpg)
Table 1.
The 82 consonant-vowel-consonant English words selected for word recognition testing
Table 2.
Measurements of the correction ratios (%) when HLS-1 was utilized
Values are presented as mean±standard deviation.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.
Table 3.
Measurements of the response time (second) when HLS-1 was utilized
Values are presented as mean±standard deviation.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.
Table 4.
Measurements of the correction ratios (%) when HLS-2 was utilized
Values are presented as mean±standard deviation.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.
Table 5.
Measurements of the response times (second) when HLS-2 was utilized
Values are presented as mean±standard deviation.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.
Table 6.
Comparison of correction ratios between HLS-1 and HLS-2
P-values in the Mann-Whitney test.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.
Table 7.
Comparison of response times between HLS-1 and HLS-2
P-values in the Mann-Whitney test.
HLS, hearing loss simulator; ~th, words that end in th; ~s, words that end in s; ~f, words that end in f; s~, words that begin with s; f~, words that begin with f; front-f, words that begin with fricatives; rear-f, words that end in fricatives; fri-s, words with fricative s; fri-f, words with fricative-f; TAC, testing algorithm combination.