HAT 3 Prescription & Gain Flashcards
1
Q
What is the definition of gain?
A
Gain (dB) = output (dBSPL) - input (dBSPL)
2
Q
What are the axis labels on a frequency response graph?
A
3
Q
What are the axis labels on an input output graph?
A
dBSPL
4
Q
What is lybargers half gain rule?
A
Half the AC threshold + half AB gap + 10dB reserve = gain (dB)
5
Q
When would you apply more gain than lybargers rule? (3)
A
Conductive loss
Severe loss
Previous user info
6
Q
When would you apply less gain than lybargers rule? (5)
A
Canal aids
Bilateral fitting
Open fitting
Previous client information
Asymmetrical loss
7
Q
Name 3 different methods / prescriptions used?
A
NAL 1 & 2
Berger
POGO
