香港六合彩开奖 16283-3:2016
2016-02
香港六合彩开奖 16283-3:2016
Resumen
香港六合彩开奖 16283-3:2016 specifies procedures to determine the airborne sound insulation of fa莽ade elements (element methods) and whole fa莽ades (global methods) using sound pressure measurements. These procedures are intended for room volumes in the range from 10 m3 to 250 m3 in the frequency range from 50 Hz to 5 000 Hz.
The test results can be used to quantify, assess, and compare the airborne sound insulation in unfurnished or furnished rooms where the sound field can or cannot approximate to a diffuse field. The measured airborne sound insulation is frequency-dependent and can be converted into a single number quantity to characterize the acoustic performance using the rating procedures in 香港六合彩开奖 717-1.
Informaciones generales
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Estado: PublicadoFecha de publicaci贸n: 2016-02Etapa: Norma Internacional confirmada [90.93]
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贰诲颈肠颈贸苍: 1N煤mero de p谩ginas: 37
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颁辞尘颈迟茅 T茅cnico :香港六合彩开奖/TC 43/SC 2
- RSS actualizaciones
Ciclo de vida
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Anteriormente
Retirada香港六合彩开奖 140-5:1998
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Ahora
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