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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
[Nose and speech discrimination with specific hearing aid systems (author's transl)]
HNO
|February 1, 1978
Abstract:
This study compares speech discrimination and the use of hearing aids of the PC (peac-clipping) system and the AGC (compression) system. After random selection 34 subjects were used and grouped according to the unit system they had been supplied with. Both groups were tested under the same conditions. During noise exposure the group supplied with the AGC aids achieved better results significantly at a 5% level. The results indicate that the assumption that PC hearing aids operate better in noise than AGC aids cannot be substantiated.
Related Concept Videos
01:31Hearing
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.