The reason I didn't want to use the noise cancelling ones before was that I didn't know (and I am still not very sure) if the sound they generate might affect my tinnitus and hyperacusis. Is there one sound cancelling another or do you end up hearing two sounds, the external one and the one generated by the earmuffs?
Also, there are people complaining of dizziness, ear pressure and headaches when using them.
I haven't used them long enough to notice that, but it's interesting though.
Here is a possible explanation:
"Eardrum suck seems to be psychosomatic—there's no measurable air-pressure difference in noise-cancelling headphones (and yes, we did try to measure it). After speaking with some engineers who have worked on noise-cancelling headphones, we've surmised that it likely occurs because of the way some people's brains process the dramatic and uneven change in sound that happens when they turn on the active noise cancellation.The brain may interpret this shift as a decompression, and it tells your eardrums they're being sucked out, even though they're just fine. But the brain rules the body, so pain is the result."
The reason I bought them was that I couldn't stand to hear the car engine sound for more than 30-40 minutes. And the Peltors weren't blocking those low frequency sounds well enough. I felt like I was under water or something when using them.
With the Sony ones though... it's pure magic. They block the car engine noise almost completely.
I don't know how I will feel after wearing them for 2-3 hours but I will keep you updated.
They are lighter, they do a great job blocking that traffic low frequency noise that my tinnitus is very reactive to, they look much better than the Peltor ones, the occlusion effect is minimal... I just hope they won't make my tinnitus/hyperacusis worse.
And there is also another problem,the lack of protection against sudden and high pitched sounds. But as you said, i could wear some earplugs in the same time.