Have you tried matching a stereo to your hearing?

Unless the hearing change in one's ears was a sudden change, the person would hear the normal for them sound from perfect system, becaue only a correct to real system would sound to them, normal.
Any change to compensate would sound bad to the person. It would take quite a special person to want to listen to the distorted system to supposedly hear a normal sound of music as heard by non damaged hearers.It COULD be possible, but it would be crazy as hell... IMO.
However, some folks who enjoy moving coils with the tilted up treble are, in effect, doing just that.

Elizabeth, with all due respect, I beg to differ. Don't many use different corrective lenses to compensate for different viewing circumstances? Don't many listen in the dark? Why not hear things the way they were meant to be heard, rather than in an otherwise distorted fashion, when a remedy might be readily available? I suspect customizable equalization might be a better route, than trying to find a distorted system to compensate for human error. Of course customizable high fidelity hearing aids might be the best remedy.

I suspect a problem with doing it, assuming an sensitive enough EQ was available, would be the recorded media would likely be mixed based on the sound engineers hearing so every recording would be different.

On a more macro scale, could the speakers be adjusted left vs. right for people with hearing problems in one ear? There is at least one forum member that has very different left and right channel speakers with this very issue.

Considering how poorly some of today's pop recordings are made, Mceljo might have a very legitimate concern.:-)

IF it was a wanted thing it would be being done, wouldn't it? SINCE no one is doing it (and it is easily possible and certainly someone or more have tried it), no one wants to do it.. simple. The logic which wants to 'fix' things for folks who don't want the fixing, is faulty. Mostly because of the reason I mentioned. The people with a hearing problem are either already wearing hearing aids, or are used to what they hear, and would NOT LIKE the sound if it was corrected to allow thier damaged ears to put the sounds normal folks hear into thier head. AND altering the sound enough to MAKE the damaged hearing seem to hear as normal, would damage the persons hearing much much more, because the very frequencies they have lost, are going to be extremely loud to make the ear hear it as if normal, AND that really loud frequency will destroy what is left of that frequency response in the ear.
A bad idea.