BlockquoteI’d be curious to have you wear your headphones and play the ISTS signal through them and record the response with PMM (probe measurement microphones, used during real ear measurements). Or put them on a 2cc coupler in a test box and do it that way. Either way. Then you could do a transition fitting to match the frequency response of the hearing aids toward the frequency response of the headphones. Wouldn’t sound exactly the same due to the difference in the drivers, like you said, but it might bring some of the magic of the headphones to the hearing aids.
That being said, I do think that if you can hear that well with headphones and the cell phone, the biggest improvement would be to allow someone to fit you to REM verified NAL-NL2 targets and have them measure the MPO and keep it under your UCL limits. I would also ask them to run UCL for you across all the same frequencies of a normal hearing test, 250-8k so that it lessens the risk of discomfort from your hyperacusis.
I can tell you are putting a lot of effort into hearing well, and I hope that you can get that improvement.
Great idea! The Costco exam/fitting was excellent…and followed best practice as far as I can tell. Lots of discussion, repeating tests, final real ear testing, and more tweaking. Left very happy at the time. The worst was the “degreed” Audiologist as truhearing…younger person, with very little technical knowledge as far as I could tell…short test with little discussion. Canceled any further dealings with them. The Costco fitter (not a degreed audiologist) was near retirement, and was the most thorough and knowledgeable of any that I have encountered. Will see him again in two weeks. I will discuss this idea with him.
My working theory is that since the HA use a micro driver directly into the canal, they must loose a lot of overall sound information. Basically the headphones make use of the full ear physiology (ie shape), have an relatively enormous driver, and, very importantly, the muff cancels out most of the world. The end result is that I get as high an original signal to noise ratio as is physically possible.
I have always had a mild tinnitus…and any relatively loud noise would set it off for hours…so between the discomfort of loud sounds in general, and the increase in tinnitus after exposure to loud sounds, I have learned to attenuate and or avoid any loud sounds. Even now with crap hearing.
The most significant benefit I get from (any) HA, is that since world sounds are indeed amplified, my wife can get my attention easier :)…I can’t necessarily hear what she said…but I know I am summoned! Good thing.
Overall, I like a quiet world. Always have. Loss of hearing sensitivity is definitely a two edged sword for me.
Ethan