In my mid forties, around the time it became apparent I needed a different optical prescription for reading, I noticed a change in my hearing, such that the alto / tenor compass became a lot more prominent. Before I was convinced of the change, I’d checked out the tweeters on the hifi and asked whether a couple of organs I’d been away from a while had had their mixtures tamed.
I have had a couple of hearing tests but I echo that these were uninterested in anything but the natural spoken voice frequencies, which I’d guess vary by less than two octaves, a small fraction of the audible compass. Both audio testers were uninterested in me discussing musical pitch or Hz frequencies.
I have been mulling over two thoughts, the first in line with the previous post about correction, though perhaps more interesting to this forum how the ageing process of human hearing affects the musician; whether composer, orchestrator, performer or instrument technician. In the case of organ voicers or those deciding on pipe scaling, especially volume progressions through the compass, what were they hearing when they’d finished? - the shrill and exciting sharp mixtures I loved in my immature twenties or the more restrained balanced sounds, of the same pipes, in my late forties?!