Road traffic noise reducing devices. Test method for determining the acoustic performance - Intrinsic characteristics. In situ values of sound diffraction
Road traffic noise reducing devices. Test method for determining the acoustic performance - Intrinsic characteristics. In situ values of sound diffraction
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What is BS EN 1793-4- Sound diffraction of added devices in road traffic noise reducing devices about?
BS EN 1793-4 is a standard that serves technical specifications for sound diffraction of added devices in road traffic noise reducing devices, enabling noise reduction in pedestrian road and traffic applications. BS EN 1793-4 describes a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices. BS EN 1793-4 test method prescribes measurements of the sound pressure level at several reference points near the top edge of a noise-reducing device with and without the added device installed on its top. BS EN 1793-4 method gives the acoustic benefit over a simple barrier of the same height; however, in practice, the added device can raise the height, and this could provide additional screening depending on the source and receiver positions.
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