FIELD: medicine.
SUBSTANCE: polyharmonic audio signal of each frequency is supplied into an acoustic analyser through an ear plug hermetically jointed to a wave guide tip, the other end of which is equipped with a loud speaker connected to a generator. Three frequencies (fi), whereat a responsive component of eardrum complex impedance is equal to zero are measured. Absorption (αi) and resistance (Ri) factors are calculated for each frequency. If K>10, the eardrum state requiring no in-depth examination is stated. The polyharmonic audio signal is generated by a set of audio signals at a frequency pitch of 20 Hz and supplied in the range of 340 Hz to 3300 Hz.
EFFECT: method enables providing more reliable examination ensured by determining responsive component frequencies of the eardrum impedance and calculating the absorption and resistance factors.
4 cl
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Authors
Dates
2015-06-10—Published
2014-02-03—Filed