Exam (elaborations)
IHS Chapter 4 Questions and Answers 2024
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Exam of 1 pages for the course IHS at IHS (IHS Chapter 4)
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IHS Chapter 4What effect does a 10 dB SPL increase in intensity have on the sensation of loudness
over the most of the audible range - answer increases by double
How does Boyle's law apply to hearing aid fittings? - answer fitting depth affects the
sound pressure level at the eardrum
A HA Specialist is presenting a tone to a PT. They want to be sure that the PT hears the
tone, so they present it at a level that is 20dB above the PT's threshold at 1000 HZ,
which is 30dB HL. How should the HA Specialist notate this presentation level? -
answer20 dB SL
Which frequency of pure tone will be perceived as the loudest when presented at 60dB
SPL? - answer1000 Hz
A PT comes in for Hearing Test. They indicate they have a lot of trouble distinguishing
between speech sounds like "ith" and "if" as well as hearing background noise.
Which factor may be causing this PT's challenges? - answerwidening critical bands
PT is in office for a 6month F\U appt. They state they are generally very happy with
HA's, but they are having trouble in conference area at work as it is in a large room with
hard surfaces.
What acoustic principle can be applied to decrease PT's difficulty? - answerabsorption
when Two 40 dB SPL sounds are combined what is the resulting dB SPL? - answer46
dB SPL
Intensity and frequency are the perpetual matches for which of the following -
answerloudness and pitch
what is the dividing line between low and high frequencies - answer1000 Hz
HA Specialist strikes a tuning fork, which begins to vibrate and emit a sound. How do
the sound waves created by the fork affect the air through which they travel - answerthe
waves move the air molecules through compression and rarefaction
What is the range of human hearing in dynes\cm2 and decibels? - answer0.0002 to
1000; 0 to 140
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