> Symptoms are - can hear just fine in a nice, uncluttered audio environment, say a test centre, but has issues if there is any significant background noise.

> Symptoms are - can hear just fine in a nice, uncluttered audio environment, say a test centre, but has issues if there is any significant background noise. Also a problem if you're not a native speaker. I am fluent in English and have been able to watch movies without subtitles for 20 years at least, probably more. But put me in a noisy bar and my error correction suffers a lot. Suddenly it's hard to follow a conversation that in my native language would be effortless. The worst situation is listening to a loud video on bad speakers. Doesn't matter how much you crank the volume, people are hard to understand because the brain's error correction isn't good enough. Use a good speaker and turn down the volume, suddenly it's perfect.