Hearing aid has very short vario vent in single or dual form and granulate of suitable type, shape, color and composition in the hearing aid tube, sound tube or angled hearing element

摘要

The hearing aid has a very short vario vent (5) in single or dual form and granulate of suitable type, shape, color and composition in the hearing aid tube, sound tube or angled hearing element. Unwanted peaks in the frequency characteristic are damped by the small wedge-shaped or crushed granulate (3) in the sound outlet opening.