HEARING AID

A hearing aid is disclosed in which outside sound collected by a microphone (3) is amplified and radiated from an earphone unit (2) so as to be conducted to the user's external auditory meatus (A). An acoustic tube (1) is of an inside diameter (W) approximately equal to that (Wo) of the user�...

Full description

Saved in:
Bibliographic Details
Main Authors SOGAWA, HIROYUKI, IIDA, YASUHIRO, INANAGA, KIYOFUMI, MIURA, MASAYOSHI
Format Patent
LanguageEnglish
Published 13.07.1991
Edition5
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
Online AccessGet full text

Cover

More Information
Summary:A hearing aid is disclosed in which outside sound collected by a microphone (3) is amplified and radiated from an earphone unit (2) so as to be conducted to the user's external auditory meatus (A). An acoustic tube (1) is of an inside diameter (W) approximately equal to that (Wo) of the user's external auditory meatus (A) and has one end (1a) provided as a section for attachment to the user's auricle (D) and the other end (1b) arranged as a reflectionless terminal. The earphone unit (2) is mounted on the peripheral surface of the acoustic tube (1) with the sound radiating surface facing the inside of the tube (1).
Bibliography:Application Number: CA19912033580