IHS Exam Physics Questions And Answers

IHS Exam Physics Questions And Answers In general, mold modifications are as follows: - ANS-Venting affects lows, damping the midrange and horn effects boost highs. Basic verification involves: - ANS-checking MCL and UCL in quiet and noise. Sound field is - ANS-a controlled environment The configuration and height of the tympanogram can be a factor in deciding the proper matrix for the fitting of a hearing aid: - ANS-A high Type A tells us to decrease the output by 2-3 dB You cannot use feedback checks when - ANS-checking the telephone coil Verification procedures: - ANS-Check the accuracy of your fitting. The problems produced by excessive ambient noise are - ANS-greater for the lower frequencies than the higher frequencies The decibel is - ANS-a ratio between two intensities REUR measurement are taken in - ANS-an open human ear canal When a hearing aid is dead, you can check the receiver and microphone function by: - ANS-turning on the instrument telecoil The dividing line between the external and middle ear is the - ANS-tympanic membrane The cochlea, acting as a frequency analyzer, distributes acoustic stimuli to places along the basilar membrane according to frequency. This forms the basis of a hypothesis called the: - ANS