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by hedora
1146 days ago
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Diaphragm earplugs already work much better than the technology you describe will, and are about $20: https://www.gomumba.com/products/mumba-high-fidelity-concert... This brand is ranked well on Amazon. I’ve never used them, but can’t remember the brand name of the name brand ones I had in the 1990’s. There are also ones optimized for hunting, or you like using power tools during casual conversations. |
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