Lesson 7

Question 1

A dial on the audiometer to control the decibels of output is called:

Answer 1

a hearing level dial & an attenuator dial

Question 2

Audiometric zero for pure tones is higher than the standard reference level by about:

Answer 2

differs at each frequency

Question 3

ANSI letters stand for

Answer 3

American National Standards Institute

Question 4

The audiometer is designed so that zero on the attenuator dial:

Answer 4

represents the level of normal hearing for that frequency

Question 5

By air conduction, sound energy changes forms in which of the following manners:

Answer 5

acoustic energy, mechanical energy, hydraulic energy, electrical energy, chemical energy

Question 6

The normal ear responds to a range of frequencies from

Answer 6

20-20,000 Hz

Question 7

Sound waves, during bone conduction, transmit from the

Answer 7

skull to cochlea

Question 8

Which of the following describes a Phon?

Answer 8

A unit of measurement when comparing the loudness of one frequency to another frequency

Question 9

Routine hearing testing should be performed

Answer 9

in a sound controlled environment

Question 10

Audiometric zero is a) 0 dB Hearing Level b) 0 dB HL c) the level where normal ears can hear at every frequency d) all of the above

Answer 10

all of the above