Two channel pure tone digital odyometer designing

In this study, an audiometer that can produce pure tone which is used on basic hearing tests, and frequency modulated white and pink noise which are used in masking that can be produced for each ears via separate channels, is designed and produced. On this audiometer, the amplitude control of sound signals are digitally managed on integrated circuit. The device, developed during thesis studies, has modular specifications that enable the architectural device to be enhanced. For the audiometer, a special relayed, mode power supply is designed and noises which can occur via line are averted. The power supply that feeds the audiometer is taken outside the device thanks to this signal noise rate on the output signals of the device is meliorated. Output signals are compared with the output signals of MA53 model pure tone audiometer of Maico Firm. In determining the device specifications, TS 9595-1 EN 61645-1 (electroacoustic ? hearing aids ? Section 1: Pure Tone Audiometers) is used as a reference.