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Bone Conduction Appliances
THE ELECTRIC HEARING AID
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1-piece acoustic Acousticon amplifier audiologist Barrette battery Behind-ear Body bone conduction capacitor carbon aid ceramic mic Corp crophone CROS Crystal mic deaf device diaphragm distortion dot Gain double mic ear canal ear trumpets ear-level earmold earphone Electret mic electric Electronics Established extrec eyeglass frequency response Front mic Gain 38 Gain 40 Glasses grid hearing aid dealer hearing aid manufacturers Hearing Aid Museum hearing loss input instrument integrated circuit K.S.U. Hearing Aid license located Magnetic mic Magnetic rec Maico mercury cell metal mic opening microphone Modified monaural open mold Oticon Output patent plastic plate president purchased receiver Red dot resistor shown in Figure signal silicon silver Sonotone sound style Sub-models Super table model tion tone control Top mic Tradename transistor triode tube hearing aid vacuum tube vacuum tube hearing vibrator voltage volts volume control