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Sound recover/compression question

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what does sound recover - compression really do? because i just do not hear in the 4-6-8k range i had an audi on the hearing aid talk site tell me to star up sound recover on my phonak aids and set it from 4k to 8k and that would move those sounds down into the 1k to 3k range. i did that and i could hear the wife better. at this time i have the signia ax5 aids and they do compression and i’m told that this does not move the sounds down. so if this does nto actually move sound down the spectrum what is the purpose of having it?

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Some terminology first. There are two different kinds of compression when we’re talking about hearing aids.
“Compression” refers to the fact that with hearing loss we have less dynamic range. (less distance between the quiet and loud sounds we can hear) So in your case at 1500 Hz, you don’t hear anything until the sound is 65 and probably can’t stand anything over about 100-110 dB. So for you to hear softer sounds the hearing aids give more gain to quieter sounds and less (or even none) to louder sounds) That’s “compression.”

Sound Recover is a form of “Frequency Compression” High frequency sounds are lowered to a level that you can hear. It can enable high frequency sounds to be heard, but it also can introduce distortion.
Signia’s do have Frequency Compression. However it’s not as sophisticated as Phonak’s Sound Recover 2.
Hope this helps. There is a LOT more information available on this topic.

In reply to @MDB

so should i keep using the ax fit formula or maybe switch them to the nal-nl2 formula? so if it does no good to turn on the signia compression? what numbers might i try? i watched that YT where the phoenix audi talks on compression and i did try that a bit but i think i had the main program off so bad that it did nothing so i deleted all the fittings and put in the that the phonak is using with the axfit formula and they are better. but not as good as the phonaks are. if i could get them to work like the startup sounds or the blue tooth sounds i get whenusing the phone that would be perfect.thanks

First you need to “get” the difference between compression and frequency compression. Assuming you do, you need to confirm that Signia’s have their Frequency compression turned on. I think it’s called FCo but not sure. I don’t think it will be on any app but will be available in the Connexx fitting software that your audiologist has. I’m unclear if you have the Connexx software or not. If you do, trying is a fine thing to do. If you do have the Connexx software, going to the part of the forum to continue discussion would be a good idea.

thanks. i have connexx and the programmer. i will give it a try again. currently i have it running in the axfit formula. and i will try the nal-nl2 again, maybe because i have the compression turned on and had the slider down to 4k but also i had ucl and mcl in the all fo that may have messed with the complete program. thanks

i just went in and looked and i was wrong i had the compression set to 2k to 3k that may have been to far down so i turned it off for now and turned on the nal-nl2 formula. i will let this rung for a few days and see if it improves. i though i had the compression off. my mistake. but now this is what i have no compression nal-nl2 formula. and i will see if the wife’s speech is audible to me. if not i will move the left line to a lower frequency a k at a time and see if thieng improve.

i did a recalculation and kept the fine tuning. maybe i need to recalculate and over arite the fine tuning. if you want a screen shot of that let me know thanks

@corvairbob said:

signia ax5 aids and they do compression and i’m told that this does not move the sounds down.

Signia frequency compression, () shifts the higher frequencies “down”
same as Phonaks SoundRecover they all work the same.

@corvairbob said:

so should i keep using the ax fit formula or maybe switch them to the nal-nl2 formula?

You should try it and see if this works for you.

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