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- W631967660 abstract "An attempt was made to minimize environmental nuisance to residents whose homes lie within 15 meters of metro line in Marseilles. Based on research, sound barriers and elevated sections were erected. Most of the noise emanated from the movememt of rubber tires, and this was thoroughly investigated. Mathematical formulae were used to verify that the model simulated in the laboratory was a fair representation. The most commonly recorded frequencies were between 500 and 4,000 Hz. A band of one octave centered on 500 was selected. Tests were conducted for different positions of the source and with different sound protection systems. The adaptation was recommended of lateral screens at least 1.8 m high, turned inwards at the top, with a mass of not less than 25kg/m squared. Choice of material was left to the engineer. The results were evaluated with respect to the following: comparison of actual noise levels with predicted levels; screen efficiency; and nuisance level for neighborhood. It was found that the noise protection provided by the screens was effective. This has been confirmed after 10 years of operation." @default.
- W631967660 created "2016-06-24" @default.
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- W631967660 date "1988-01-01" @default.
- W631967660 modified "2023-09-24" @default.
- W631967660 title "NOISE PROTECTION IN A RESIDENTIAL AREA NEAR AN ELEVATED METRO LINE IN MARSEILLES" @default.
- W631967660 hasPublicationYear "1988" @default.
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