KS I ISO 3746-2022 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure —Survey method using an enveloping measurement surface over a reflecting plane
2022KS I ISO 3746:2022 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure —Survey method using an enveloping measurement surface over a reflecting plane
2016KS I ISO 3746:2016 Acoustics-Determination of sound power levels of noise sources using sound pressure-Survey method using an enveloping measurement surface over a reflecting plane
2002KS I ISO 3746:2002 Acoustics-Determination of sound power levels of noise sources using sound pressure-Survey method using an enveloping measurement surface over a reflecting plane