Fitting System for Hearing Aids by Using “Hearing Aided Threshold” (DRF-SSM Fitting)
1984 Volume 27 Issue 3 Pages 176-180
Details
1984 Volume 27 Issue 3 Pages 176-180
“DRF-SSM fitting” is a program of a “hearing aided threshold” to speech range.
In subject with normal hearing high tone is emphasized by resonance in the external ear canal, and speech discrimination in advantageous in almost any listening environment. Therefore. this program is to match the “hearing aided threshold” to speech range like that in subject with normal hearing, and to limit a maximum out-put under the UCL. As the result hearing aid's out-put is suitably fitted to the user's dynamic range of hearing. In addition, these procedures have an “insertion gain” and an “ear -mold's influence” and the others. Therefore, this fitting provides clear and comfortable hearing.
Actually, only three regulations (gain, tone, and maximum power out put) were given to hearing aided users for several times, and the fitting time was very short.
From experience over 200 examples this program was proved as effective to almost all types of hearing loss.
