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Mìkrosistemi, Elektronìka ta Akustika
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Mìkrosistemi, Elektronìka ta Akustika
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Determination of Resonant Frequencies of an Acoustical System of the Human by Means of Objective Methods of a Research of Hearing

Authors: Anastasia V. Damarad; Serhii Anatoliiovych Naida;

Determination of Resonant Frequencies of an Acoustical System of the Human by Means of Objective Methods of a Research of Hearing

Abstract

Different pathological processes lead to changes of human auditory system characteristics. Nowadays, hearing diagnosis is not surprising and does not cause unnecessary questions, because most people understand the importance of health care and know about problems that can arise if they are not warned in advance. In the world there are many methods and programs for objective diagnosis of human hearing.Today, among hearing diagnosing objective methods, multifrequency acoustic impedancemetry and otoacoustic emission are most widely used in clinical practice. Comparison of the obtained characteristics in normal and pathological conditions allows us to judge the degree of changes in the auditory organ and diagnose some of its diseases. However, a large discrepancy between intersubject data may overlap deviations from norms. This is the main problem in diagnosis of hearing system. Determination the resonant frequency of human auditory system structural elements in a comprehensive study, using objective methods gives us a possibility to detect changes in ear conductive system more accurately. Significant changes in the resonance frequency of human middle ear make it possible to detect an existing pathology at a functional level. Resonant frequency shift (to one or the other side) may indicate the presence of otosclerosis, auditory ossicles chain break, etc.In this work, the parameters of the human middle ear were obtained theoretically, based on a two-circuit model of the human middle ear, and confirmed experimentally, using tympanometry and otoacoustic emission, which eliminate the main problem of hearing diagnostics and offer new diagnostic parameters for sound-conducting ear system diseases diagnosing, namely, value of resonant frequencies. Determining the resonant frequency of human auditory system structures in a comprehensive study using objective methods, allows us to identify changes in ear sound-conducting system.To study human auditory system resonant frequency, an electromechanical model of human middle ear was selected and its main parameters were determined: eardrum and tympanic cavity flexibility, acoustic impedance of air in the tympanic cavity and auditory tube, resonant frequency of first and second circuits of middle ear vibrating system, auditory ossicles weight. Purpose of the study - to search and identify effective ways to improve objective acoustic diagnostic methods and substantiate the choice of tympanometry and otoacoustic emission as the main methods for studying the state of the human auditory system, which allow a detailed assessment of pathological processes.Ref. 10, fig. 2, tabl. 1.`

Современные методы исследования позволяют диагностировать развитие некоторых заболеваний или нарушения органов слуха. Для исследования такого важного диагностического параметра, как резонансная частота слуховой системы человека, была выбрана электромеханическая модель среднего уха и определены основные ее параметры, а именно: гибкость барабанной перепонки и барабанной полости, акустический импеданс воздуха в барабанной полости и слуховой трубе, резонансная частота первого и второго контуров колебательной системы среднего уха, масса слуховых косточек. Для экспериментального определения резонансных частот среднего уха человека использованы методы акустической импедансометрии и отоакустической эмиссии, которые являются основными методами исследования состояния слуховой системы человека и позволяют детально оценить суть патологических процессов.Библ. 10, рис.2, табл. 1.

Сучасні методи дослідження дозволяють діагностувати розвиток деяких захворювань або порушення органів слуху. Для дослідження такого важливого діагностичного параметру, як резонансна частота слухової системи людини, була обрана електромеханічна модель середнього вуха та визначено основні її параметри, а саме: гнучкість барабанної перетинки та барабанної порожнини, акустичний імпеданс повітря в барабанній порожнині та слуховій трубі, резонансні частоти коливальної системи середнього вуха, маса слухових кісточок. Для експериментального визначення резонансних частот середнього вуха людини використано методи акустичної імпедансометрії та отоакустичної емісії, які є основними методами дослідження стану слухової системи людини та дозволяють детально оцінити суть патологічних процесів.Бібл. 10, рис. 2, табл. 1.

Keywords

Електроніка, Акустика, middle ear; membrane; resonant frequencies; formula for the middle ear norm parameter; impedance; tympanometry; acoustic reflex, среднее ухо; слуховые косточки; резонансные частоты; формула для параметра нормы среднего уха; импеданс; тимпанометрия; отоакустическая эмиссия, 534.771, середнє вухо; слухові кісточки; резонансні частоти; формула для параметру норми середнього вуха; імпеданс; тимпанометрія; отоакустична емісія, Electronics, Acoustics, Электронника, Акустика

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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