Signals & Transducers

Question 1

Describe weber’s test, the bing test, and the rinne test

Answer 1

Weber: Test of lateralization
Bing: Test of the occlusion effect
Rinne: Test comparing AC & BC

Question 2

Where is the tuning fork placed in all three of these tests?

Answer 2

Weber - placed on the midline of the head
Bing - placed on the mastoid
Rinne - placed on the mastoid and in front of the ear

Question 3

Weber’s test:
If sound is heard in better ear this means:
If sound is heard in poorer ear this means:

Answer 3

Better ear - unilateral sensorineural hearing loss

Poorer ear - conductive hearing loss

Question 4

Bing test:
If pulsating sound is heard in ear this means:
If there is no change in loudness this means:

Answer 4

Pulsating sound - normal hearing or SNHL, positive bing

No change - conductive loss, negative bing

Question 5

Rinne test:
If sound is louder next to ear this means:
If sound is louder on mastoid this means:

Answer 5

Next to ear - normal hearing or SNHL, positive rinne

On mastoid - conductive loss, negative rinne

Question 6

Earphones change _ energy into _ energy

Answer 6

Electrical energy into acoustic

Question 7

What are the 3 types of earphones?

Answer 7

Supra-aural
Circumaural
Insert

Question 8

What has replaced tuning forks?

Answer 8

The bone conduction oscillator

Question 9

The BCO changes _ energy into _ energy

Answer 9

Electrical energy into mechanical

Question 10

The loudspeaker changes _ energy into _ energy

Answer 10

Electrical energy into acoustic

Question 11

Describe a pure tone

Answer 11

A one-frequency tone with a sinusoidal formation (has no harmonics)

Question 12

The basilar membrane does _ _ analysis of incoming auditory signals

Answer 12

Initial frequency

Question 13

The basal end respond to _ frequencies while the apical end respond to _ frequencies

Answer 13

Basal = high frequencies
Apex = low frequencies

Question 14

Noise bands present energy at many:

Answer 14

Frequencies

Question 15

When and why do we use noise bands?

Answer 15

Used in combination with other signals as a source of interference (masking)

Question 16

What are 3 types of noise bands?

Answer 16

White noise
Narrowband noise
Speech noise

Question 17

What is the most common and most complex signal we use?

Answer 17

The speech signal

Question 18

The type of speech signal we choose to use is based on these 3 characteristics:

Answer 18

Spondees
Phonetically balanced
Familiarity

Question 19

T/F The perceptual response is the most traditional response in audiology

Answer 19

T

Question 20

What is an example of a perceptual response?

Answer 20

Pushing a button, saying “yes”, raising hand, ect.

Question 21

T/F The physiological response is an active response

Answer 21

F it is a passive response

Question 22

Physiological responses are used to asses the auditory system, not _ _

Answer 22

Not hearing thresholds

Question 23

What are the 3 types of physiological responses?

Answer 23

Tympanometry
Otoacoustic emissions
Auditory Brainstem Response (ABR)

Question 24

What 3 things does tympanometry measure?

Answer 24

Volume in the ear canal, mobility/compliance of the TM, pressure in middle ear

Question 25

What does otoacoustic emissions measure?

Answer 25

The echo from the cochlea in response to stimulation

Question 26

What does the auditory brainstem response measure?

Answer 26

Electrical activity in the brain in response to sound

Question 27

When screening, a patient can either pass or _

Answer 27

Pass or refer