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Phonak DSL [i/o] fitting formula, anyone else use it?

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I was having such trouble hearing well that I travelled to London to visit my Costco audiologist.

He did a complete refit of my Phonak Brio Is and changed the fitting formula to the and then also did quite a lot of adjustments. The difference is amazing!

I’ve been told that DSL [i/o] uses high compression. The high compression seems to really work for me but I know a lot of people hate the high compression.

Anyone else that finds high compression useful?

I do self program as well which my Costco audiologist knows but I don’t feel the need to change any settings myself now.

I also have some NHS hearing aids, now I need to some how get my NHS hearing aids set the same way, lol.

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Although I don’t find this fitting formula too quiet, I have had to turn up my EasyGain setting in my Roger receivers to max. I don’t know why. Maybe I’ll email my audiologist?!

@Zebras said:

but I know a lot of people hate the high compression.

I’m one of those people. In fact, I hate compression of any sort.
It’s been said that this is because I was a long-time user of analogue hearing aids that I’m so used to unfiltered unmoderated sounds and I believe this to be true.
Don’t get me wrong, I have tried compression to see if I could benefit from it but… Ugh!
As for the (i/o), I found that formula produced the most warbling tremolo effects on Phonak aids. MOST annoying!
I’ll maybe try it on my Oticons (or similar option) when my programming boots arrive thru the post but my audiologist said that the fitting formula for Oticons NAL-RP is the most suited to my situation.

Oticon also have “DSE lin” (linear) formula. DSE is a proprietary Oticon formula. It is very similar to , but redesigned for specific hearing aids.

Edited

I have Naida V90 and my audi did not set my ha go to dsl but I did after reading a post in the forum about setting his phonaks to dsl. What my audi did that really helped was to add a manual program. The problem seemed to be the phonak fitting formula in the auto sensing program. Also the phonak formula did not have a sound recovery option where as the dsl formula gave me the option of turning off sound recover which I did. I have not made any adjustments to my ha except to make the manual program the main program when I turn on the ha. I believe the compression is set to high. My audi did a test in March and it was too loud for my hearing. What I’m doing now is trying upping the volume a couple of notches so that my brain acclimates to the higher sounds. Sorry, I have not been back to the audi hate return trips but my phone conversations and one on one have improved ten fold. I really like the formula for my hearing loss.

This is what I got for your loss with the Connexx software using the prescription forumula.

image

Here is what I get for v5.

image

I would say if anything there is less compression than NAL-NL2. I just eyeball it based on the spread between the soft gain and loud gain curves. The soft gain curve is actually the same as the normal in this prescription for your left ear. I find that DSL really tries to restore the highs. It is probably quite helpful especially for your right ear that is not too bad for high frequency loss. Seems to me that DSL may be a good choice for someone with a cookie bite loss.

If you want no compression then the 1/3 gain would give you that. However, it is not going to give you near the gain of the other two formulas. Here is what it looks like. With no compression there is only one curve.

image

Thanks for that. It’s interesting to see. My left ear is conductive so has a lot more power then what is shown. :slight_smile:

Since I’ve had the adjustment, I’m no longer picking up fan / noise which is great! NoiseBlock is only at 5 (max 20) so it’s nothing to do with NoiseBlock.

I tried dsl for a while and I liked it. It did ramp up the highs and I made adjustments to get some of the lows back on soft sounds.

I eventually went to with Target set for semi-linear on the Basic tab. I upped soft sounds and that’s where I am now. I think semi-linear is a little clearer for me.

I’m starting at 1100 on both ears, to pull sounds down out of the dead spots. The more I get used to it the better I hear. It’s good, not perfect, and with my hearing loss this may be the best I can do.

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