METHOD FOR EXAMINING EAR-DRUM STATE Russian patent published in 2015 - IPC A61B5/12 

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 (f_i), whereat a responsive component of eardrum complex impedance is equal to zero are measured. Absorption (α_i) and resistance (R_i) 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.

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