ISO 9613-1 pdf download - Acoustics - Attenuation of sound duringpropagation outdoors 一 Part 1: Calculation of the absorption of sound by theatmosphere

ISO 9613-1 pdf download – Acoustics – Attenuation of sound duringpropagation outdoors 一 Part 1: Calculation of the absorption of sound by theatmosphere. D.1.1 This annex describes a general spectrum- integration method to calculate tho