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Information × Registration Number 0209U008783, 0108U001694 , R & D reports Title Creation of acoustical echoscope - new device for fundamental researches and diagnostics of ear popup.stage_title Head Didkovsky Vitaliy, Registration Date 17-12-2009 Organization Research Institute of Applied Electronics of Natoinal Technical University of Ukraine "KPI" popup.description2 The mathematical model of middle ear is developed as two CPLD contours. On the basis of equivalent charts it is got in theory and expression is confirmed experimentally for to the parameter of norm of middle ear of man. The new method of early objective diagnostics of violations of ear which will realize a device for determination of parameter of norm of middle ear in the voice range of frequencies is offered, is acoustical echoscope. A device allows to measure a reflectivity sound from the system of middle ear and both in number and high-quality to estimate his state. Absence of pneumatic system, that can harm a child, allows to apply echoscope in a maternity hospital. By acoustical echoscope, on the basis of measurings of frequency dependence of reflectivity sound from an ear-drum, certainly flexibility of ear-drum; resonance frequency of the mechanical system of ear; mass of otosteons; attitude of active constituent of mechanical impedance of ear toward the impedance of air; coefficient of transformation of acoustic pressure otosteons in the liquid of snail of internal ear; and also value of parameter of norm. On the basis of the developed method researches of the auditory system of man are conducted and new conformities to the law of its functioning are set. The results of development are realized in otolaryngology. Product Description popup.authors Лисенко Наталія Іванівна Найда Сергій Анатолійович popup.nrat_date 2020-04-02 Close