A Detecting Research Of New Digital Instrument For Curing Tinnitus

This paper introduces a detecting research of new digital instrument for curing tinnitus. It is based on the trial of aftereffect restraint and the shelter therapeutics. It can offer many shelter sounds includeing square wave, sine wave and random, natural sounds, regulate frequency and volume by digital. It's made up of many audio frequency digital semaphores and a computer in order to meet the need of a doctor to manage some tinnitus sufferers. The semaphore composed of master chip ATmega8, can produce sounds, control volume, communicate, alarm and furnish power. The DDS technolog is used to produce periodic waves, it improves wave which make the distortion is within 1﹪, timbre and precision which is confined in 1Hz within 20kHz, debases noise. It use one phonic chip to putout many natural sounds. The digital closed loop mode is used to control intensity, it confines precision in ±2dB within 90dB. The upper memory computer used C++Builder6.0 which is a visual software to design control panel and database which can save and query the sufferer's informations. It can tune up curing protocols and parameters, display these correlative parameters and supply some helpful informations. It uses RS485 agreement to communicate with the semaphores and simplified hardware junctures. The instrument has been generalized to many hospitals by iatrical instrument company of KangLiSheng, ShanXi. It shows that the instrument is convenient , effective and low-cost , so it has been popular to the tinnitus sufferers.