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- W805214198 abstract "At 1:10 scale model investigation of the acoustic performance of various types of louvers for road traffic noise reduction is reported. Two types of louvers, one made of standard steel material and the other of standard steel plus an absorbing polyurethane foam attached to the blade surfaces were used in single, semi-double and double forms for the experiments. The required frequency range of the model experiment was 1 khz-20 khz and a broad band line source of the jet noise type was used. Noise loss increased as absorbent material was added to the lower blades, the maximum loss being about 10 db. Results indicate that an absorptive area of 4 square metre unit area of louver is the most effective choice. For the covering abstract of the conference see IRRD 816933." @default.
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- W805214198 date "1984-01-01" @default.
- W805214198 modified "2023-09-26" @default.
- W805214198 title "REDUCTION OF ROAD TRAFFIC NOISE BY LOUVERS ---INTERNOISE 84. INTERNATIONAL COOPERATION FOR NOISE CONTROL. PROCEEDINGS 1984 INTERNATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, HONOLULU, HAWAII, 3-5 DECEMBER 1984, VOLUMES 1 AND 2." @default.
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