A Clinical Study of the Hearing Aid Fitting Procedure
1984 Volume 27 Issue 3 Pages 185-192
Details
1984 Volume 27 Issue 3 Pages 185-192
For the development of a better procedure to fit hearing aid for young children with hearing loss, the reliablities and varidities of the procedure using ‘fitting aid’ (used 1/3 octave band noise for test sound and patient's dynamic range for the guideline) and our clinical procedure using audiometry by sounds from a loud speaker and mono-syllable intelligibility test are examined in 20 hearing impaired children and adults.
Results are as follows;
1) In case of ‘sharp cut’ hearing loss, their auditory thresholds measured by ‘band noise’ tended to differ from that measured by pure tone.
2) By adjusting the output sound pressure level of loud speaker, even by the sound of speaker in a free field, the reliable measurements were obtained.
3) For getting better hearing discrimination ability of speech, the threshold with hearing aid was required to be less than 60dB (S. P. L.).
4) A mono-syllable intelligibility test had many problems for evaluation of hearing aid.
