12.07.2015 Views

DANI System s.r.l. Modello: TUBO PIUMA 125 - RUMOR BLOCK

DANI System s.r.l. Modello: TUBO PIUMA 125 - RUMOR BLOCK

DANI System s.r.l. Modello: TUBO PIUMA 125 - RUMOR BLOCK

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3/80047\DC\ACU\12_305/02/2013DESCRIZIONE DEL METODO DI PROVA / TEST METHOD DESCRIPTIONGenerazione di un campo sonoro diffuso mediante rumore a banda larga nella camera sorgenteMisurazione dei livelli di pressione sonora nella camera sorgente (L 1 ) e nella camera ricevente (L 2 )Misurazione dei tempi di riverberazione T nella camera ricevente A0⋅TCalcolo dell’isolamento acustico normalizzato D n,e mediante la formula A = L1 − L2+ 10 ⋅ log dove: 0,16 ⋅VA 0 = superficie di riferimento (10 m 2 )V = volume della camera ricevente (m 3 )Valutazione dell'indice unico D n,e,W secondo ISO 717-1 (nella banda 100÷3150 Hz) basata su misurazioni ottenutein laboratorioGeneration of a diffuse sound field using broadband noise in the source roomMeasurement of sound pressure level both in the source room (L 1 ) and the receiving room (L 2 )Measurement of reverberation time T in the receiving room A0⋅TCalculation of the normalized level difference D n,e according to the formula A = L1− L2+ 10 ⋅ log 0,16 ⋅Vwhere:A 0 = surface area of tested sample (10 m 2 )V = volume of the receiving room (m 3 )Calculation of single number rating D n,e,W according to ISO 717-1 (in the band 100÷3150 Hz) based on laboratorymeasurementsCondizioni ambientali durante la prova / Climatic conditions during testTemperatura ambiente / Room temperature 18 °CUmidità relativa / Relative humidity 45 %

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