Distortion can be from cochlear damage or nerve damage.
Do tonal audiogram.
Ask to do word recognition score, that’ll tell you how well your brain can work with this distortion.
MRI shows if there’s visible damage on the nerve, measuring brain stem reflex can show how nerves work if MRI is ok.
There might lie reason for distortion.
Or in cochlear dead regions. Those can be found with checking otoacoustic emissions for frequencies that have damage above 60db.
From your post my first association isn’t ‘significant loss in some frequencies’.
In short, there’s very little ideas what brings distortions exactly, but if it’s cochlea damage, and nerve is perfect, cochlear implant is the only way to skip it.
Until they made a drug (currently in testing phase) which makes some cochlea cells heal, which are responsible for clarity eg distortion.
Also, there’s trial for anti tinnitus drug.
Future looks bright.
But until they make it, yeah, unfortunately, nothing else to do to really solve it. Train your brain to use it and learn to live with it.
Of course, health check that everything is OK with the nerve.
