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    2019-11-09 23:47:26

    Interesting product. These earplugs do not cut off an audio frequency range as usual, but they attenuate the "volume" of the sounds in your environment. The first time I tried them, I wondered if he was doing anything. They must make a uniform noise reduction (bass as well as treble) of 20db (20db is huge, it's 10x less loud). Honestly, I don't know if this number has been reached, because I can still hear my environment very well. I can even follow a conversation without difficulty. In a noisy environment,

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