摘要: Anatomy and Physiology of Hearing, Hearing Impairment Treatment.- Audiology: The Measurement Hearing.- Hearing-aid Principles Technology.- Induction-loop Systems.- Infrared Communication Telephone Alarm Alerting Systems for Hearing-impaired Deaf People.- Dual Sensory Impairment: Devices Deafblind Final Product: Issues in the Design Distribution Assistive Technology Devices.