Abstract
A speech audiometry trial is described for testing the degree of hearing loss and its pathogenesis. The recorded natural voice was used for the test. However, natural speech have no universality and reproductibility, whereas synthetic speech has.
I have been using synthetic words for speech audiometry, and synthetic speech audiometry for normal hearing adults was examined. The synthetic speech audiometry was performed with various sounds as follows, 1. non-distorted vowels, 2. filtered vowels and time compressed vowels, 3. nondistorted synthetic 57-system list, 4. non-distorted synthetic 67-system list, and 5. interval changed 67-system list.
The results of these synthetic speech audiometry were as follows.
1. Correct replying rate of non-distorted vowels were 100%.
2. Correct replying rate of non-distorted consonants (CV-syllable) were 83%.
3. Synthetic speech audiometry might be useful for diagnosis of retrocochlear dysacusis.
