ISO 9613-1:1993 pdf download – Acoustics – – Attenuation of sound during propagation outdoors一 Part 1: Calculation of the absorption of sound by the atmosphere
ISO 9613-1:1993 pdf download – Acoustics – – Attenuation of sound during propagation outdoors一 Part 1: Calculation of the absorption of sound by the atmosphere. 82 Pur.-tone method to approximate band-i.v.l attenuation 82.1 For each tractional-octave band of interest and...