Firstly, I am an audio engineer and working musician with 50 years experience. I have studied how the auditory system works. My personal situation involves a term called hypersensitivity. In a quiet environment , I can hear a pin drop from across a room. However, in a noisy situation such as traveling on a bus near the engine, a restaurant setting with hum drum chatter, I usually would alleviate the sensory overload by putting my hands slightly over my ears. This filtered out the lower spectrum of frequencies so that even the person sitting next to me could speak and I could make out every word he was saying. These ear plugs with the variable 3 way valve, seem to work the same way. Frankly speaking, they may seem a bit pricey upon inspection. They are after all… plastic. However, compared to the cost of hearing aids, which I do not qualify for, I have found the Loop system works for me. I store a package in my car because that is usually the scenario or setting for travel to a restaurant with friends where there is annoying music aggravated by loud people. Three stars because the foam or rubber plugs could have a wider spectrum of sizes.
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