immitance

immitance

(ĭ-mĭt′ĭns) [From im(pedance) + (ad)mittance]
In electronics the admittance, or alternately the impedance of an alternating current circuit.
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The pure tone audiometry (audiometer model AC 33) aimed to search the hearing thresholds of the subjects (frequencies from 250 Hz to 8000 kHz) for both ears; then the acoustic immitance test was performed, with tympanometric research and acoustic reflexes (middle ear analyzer model AZ 7, interacoustic).
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Audiologic testing included pure-tone audiometry, determination of speech reception and speech discrimination scores, and acoustic immitance testing.
A probe microphone similar to that used in acoustic immitance measures the inaudible sounds reflected by vibratory motion in cochlea.
This can be clearly noticed by rewriting the equations, TE and TM immitance in symmetric and asymmetric forms:
For design simplicity, the characteristic admittances of the immitance inverters between the T-shaped DMSs or U-shaped DGSs are chosen to be the same with [Y.
have proposed an extension of the spectral domain immitance approach (SDIA) for layered multiple conductor shielded microstrip but it needs to be accelerated [6].
We therefore undertook this study to find out or investigate the type and pattern of audiogram in cleft lip and palate subjects attending a speech camp, the average degree of hearing loss and its relation to the side of cleft and to assess the acoustic immitance findings and compare its relation to the otological evaluation.
McDonald, Complex nonlinear least square immitance fitting program LEVM-6, Texas Instrument Inc, Dallas, Texas 75222 (1993).
Inclusion criteria for both group were defined as: age between 8 to 12, normal otoscopy, hearing and immitance results within normal standard and no history of learning complaints.
For a two-port network, necessary and sufficient conditions for unconditional stability are that the stability factor K (Rollet's factor) is greater than one and the real part of the input immitance parameter ([[gamma].
To perform the immitance measures, it was used the middle ear analyzer INTERACOUSTIC AZ7, with phone TDH-39 and MX-41 cushion, with probe tone from 220Hz to 70dBNA and ISO standard calibration 389-1991.