Lesson 20

Question 1

What is NOT eliminated for SIE-O fitted hearing aids

Answer 1

Phase issues are eliminated

Question 2

The SIE-S provides greater acoustic advantages than does the SIE-O or the opposite?

Answer 2

The SIE-S provides greater acoustic advantages than the SIE-O

Question 3

SIA hearing aids are designed primarily to

Answer 3

Reduce occlusion and occlusion effect

Question 4

SIA open fit hearing aid applicable gains, without feedback cancellation, shows that the maximum stable gain before feedback to be closest to

Answer 4

20 dB

Question 5

The Vent as a two-channel device, is identified with

Answer 5

Any open fit or vented hearing aid

Question 6

Small diameter tubing of SIA hearing aids has the effect of

Answer 6

reducing high-frequency gain

Question 7

With the SIE-S hearing aids

Answer 7

The only signal is from the hearing aid and phase effects from a vent are not an issue

Question 8

Evidence suggests that the practical, maximum stable high-frequency gain of an open-fit device, when feedback cancellation is activated, is closest to

Answer 8

35 dB

Question 9

Performance verification of SIA, SIE-O, and SIE-S hearing aid fittings is best made by

Answer 9

Real-ear probe microphone measurements

Question 10

One of the following is NOT a listed advantage of both the SIA and SIE hearing aid fittings

Answer 10

Emphasis on earmold mechanics rather than on electroacoustics