Interacoustics Affinity2.0 Quick Manuals page 92

Step 4: Calculate the average difference
1. Click on the table mode icon
2. Once in table mode, calculate the difference between 750 Hz, 1000 Hz and 2000 Hz and
3. Calculate the average.
4. If the average is 2 dB or less, FM transparency is achieved.
5. If the average is more than 2 dB, adjust the FM.
Example 1
HA + Receiver
750 Hz 75
1000 Hz 75
2000 Hz 72
Average
*Average difference is less than 2 dB, therefore transparency is achieved
Example 2
HA + Receiver
750 Hz 75
1000 Hz 74
2000 Hz 72
Average
*Average difference is less than 2 dB, therefore transparency is achieved
References:
American Academy of Audiology (April 2011). Clinical Practice Guidelines: Remote Microphone Hearing Assistance
Technologies for Children and Youth Birth to 21 Years (includes supplement A).
http://www.audiology.org/resources/documentlibrary/Documents/HAT_Guidelines_Supplement_A.pdf
Fernée, Ben Zalm (2012). FM Verification Made Easy
http://www.audiologyonline.com/audiology-ceus/course/fm-verification-made-easy-21998
Item No. 8105096 – 12/2013
to activate Table Mode.
FM Mic + HA Difference
75 0
75 0
72 0
0
FM Mic + HA Difference
74 1
75 1
71 1
1
Table mode view in Affinity
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