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This means attenuating everything but the human voice frequencies, right? Could be very useful but i am very paranoid about the selective purity: there has to be no parasite frequency let loose... Plus it costs money, and Im shit poor atm. But the technique is great and I am toying with the...

Hi! I've got a practical issue. Yesterday I was attending a class through Zoom, and, in order to protect myself from exterior noises, I donned the Peltor X5A AND, to be able to still listen to the teacher, I amped up the volume on my phone. The problem is that any discrepancy in the...