I know that I have a bit of hearing loss due to long exposure to high SPL environments. Between listening to generally loud music, and mixing sound for bands, as well as close proximity to my own cranked guitar amps, I know there is a bit of loss. However I don't know how much my perception of the Fleischer-Munsen auditory curve has been distorted, as I've not been to an Audiologist since I was 14. --FWIW, I also have occaisional bouts of mild tinnitus because of this.
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When There's No There to get to, I'm so There!