Hearing Aid Academy Final Test Study Guide Exam

Hearing Aid Academy Final Test Study Guide Exam Dynamic range compression is also called: dynamic unity total compression knee point point of SSPL logarithmic compression - CORRECT ANSWER-logarithmic compression A resistor of a hearing aid could be: the volume control a pot to adjust the high frequency tone control all of the above - CORRECT ANSWER-all of the above Limiting the output of a hearing aid by using peak clipping would be what type of amplifier: Class A Class C Class D all of the above - CORRECT ANSWER-Class A A hearing aid with a push/pull circuit would have: nickel cadmium battery Class B amplifier low gain and output lithium chip - CORRECT ANSWER-Class B amplifier If a hearing aid is classified by polar pattern it is a: ITE only directional hearing aid with a M-T-O switch uses soft peak clipping - CORRECT ANSWER-directional With the hearing aid set at the persons MCL you have: usable gain greater DR range functional gain usable threshold gain - CORRECT ANSWER-functional gain Prescription formulas are based on which of the following: Pogo method Berger method NAL method comparative methods - CORRECT ANSWER-comparative methods Which of the following reasons would you likely fit a bone conduction hearing aid: cost bilateral atresia more gain bilateral sensorineural hearing loss - CORRECT ANSWER-bilateral atresia Sound field are free field are used to: verify the fit of a hearing instrument give you aided and unaided scores to do sound tests using speaker and not head sets all of the above - CORRECT ANSWER-all of the above When doing sound field and free field the speaker should be: 45 degrees azimuth and 1 meter 0 degrees azimuth and 1 meter 90 degrees azimuth and 2 meters 180 degrees azimuth and 2 meters - CORRECT ANSWER-0 degrees azimuth and 1 meter Showing the difference between REAR and REUR you would have: insertion gain insertion loss only for 3 KHz insertion response for the 2 cc coupler insertion flat results - CORRECT ANSWER-insertion gain If a persons hearing aid showed a Matrix of 107/35/20 it would give their: MCL UCL SPL, gain and tone SSPL, gain and slope - CORRECT ANSWER-SSPL, gain and slope Which of the following is a term for closure of the external auditory canal: