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- W2924286543 endingPage "052060" @default.
- W2924286543 startingPage "052060" @default.
- W2924286543 abstract "Nowadays, we are not allowed to speak loudly and sing loudly in outdoor environment and our environment. Based on this, the design of muffler masks is proposed. This design adds a circuit which transmits the electric signals generated by microphones to the earphone on the normal headphones to realize the ear return function. After that, different materials are studied through experiments. The change of penetration rate and respiratory resistance of masks with different structures and layers under different flow rates; and the change of singing voice under different layers was detected by noise analyzer, and the optimum layers of sound-proof cotton were finally determined, so as to achieve the effect of silencing." @default.
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- W2924286543 date "2019-03-01" @default.
- W2924286543 modified "2023-09-22" @default.
- W2924286543 title "Design of muffled singing masks" @default.
- W2924286543 doi "https://doi.org/10.1088/1742-6596/1176/5/052060" @default.
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