Speech audiometry/masking

Question 1

What is the minimum IA for tubephones in speech audiometry?

Answer 1

60dB

Question 2

True or false: You are at risk of overmasking with headphones if the average ABG in the left ear is 30 dB and the average ABG in the right ear is 20 dB.

Answer 2

False
• ≤50, overmasking is not a possibility with headphones.
>50, you are at risk of overmasking with headphones and need to use insert phones for speech/speech masking.

Question 3

If you are presenting a word list at 50 dB in the test ear, what masking level would you need to present in the non-test ear assuming the following:

Minimum IA using headphones
A bilateral SNHL (i.e. no ABG in the NTE).
Provide your answer as a numerical value (i.e. no need to write dB HL).

Answer 3

20dBHL???

actually 30….??

Question 4

How do we work out the maximum scored (dB) expected to be correct?

Answer 4

Average of 1 and 2kHz + 30dB

Question 5

For a moderate conductive loss, what maximum % score correct do you expect?

Answer 5

100%

Question 6

What are the expected % scores for:
For a mild sensorineural hearing loss we expect 100 % maximum correct.

For a mild conductive hearing loss we expect 100 % maximum correct.

For a moderate sensorineural hearing loss we expect 75 % maximum correct.

For a moderate conductive hearing loss we expect 100 % maximum correct.

For a severe sensorineural hearing loss we expect 50 % maximum correct.

Answer 6

100 
100 
75 
100 
50