Adaptive Phonak Digital Contrast



Has anyone tried this fitting formula yet?

How do you find it?

I thought it was only available for the Naida B but I can see it on my Phonak Brio P-UPs so might try it.


What’s the difference in that and the regular Phonak adaptive formula?


It has slower compression.


Yes, I use it from the beginning in Naida B.
I have used APD in Naida V during my testing period. I am sorry, I can’t tell you the difference any more, I am used to APDC for nearly 9 month.
Your question let me think of it again. Maybe I will switch to APD. Why? When being together with my family my daughter and wife have loud voices. My son in contrast has a very silent voice. It takes a couple of seconds until I can understand what he is talking about. When my son and I talk just to both of us (in absence of the females) there is no problem in understanding him. Although his voice still is very silent.
My hope with “fast compression” in APD is that the gain for G50 is reached more rapidly than with APDC. Btw Phonak does not recomend APDC for severe hearing losses.

That’s a really bad thing that we can’t apply a different formula to different programs at the same time in a single HA. And I don’t have a second pair to compare the differences on the fly. (Or switch back if the change is too bad).


Zebras, have you meanwhile tried Adaptive Phonak Digital Contrast (APDC)?

On Sunday I changed my formula from APDC “back” to APD. The sound has changed more dramatically than I had expected. It is now sharper, in german I would say “crisp”. The bad thing is Target changed many values during recalculating (which is neccessary). The good thing is: overall loudness has decreased without affecting intelligibility. Now there is space left again for fine-tuning either by increasing gain/MPO in my “highs” or by decreasing sound smoothing or both. In other words: I have to start fine-tuning all over again from the beginning :frowning:

When I switched from Naida V (APD) to Naida B (APDC) 9 months ago I did not feel (hear) that big difference. It looks like Phonak was right when saying APDC is not recommended for severe to profound hearing loss (like mine in the highs). In contrast you do not have a steep ski-slope, maybe you CAN benefit from APDC in that it sounds more linear than APD (but I don’t know if there is a big difference between APDC and NAL-NL2 for you). Keep in mind: For my hearing loss I need an adjustment so that silent and loud voices have the same effective loudness - otherwise it is too silent or too loud. Good luck!


I’m trying DSL Adult and it is louder in the highs than Phonak Adaptive, or NAL-NL2. I normally have to turn up soft speech, from the first fit setting but so far with DSL I don’t think I will need to.


I just tried the DSL Adult and for me it reduces the gain by quite a lot compared to the APD.