NF S31-024-2:2009 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 2 : methods for special reverberation test rooms.
2009NF S31-024-2:2009 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 2 : methods for special reverberation test rooms.
1996NF S31-024-2:1996 Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering methods for small, mowable sources in reverberant fields. Part 2 : methods for special reverberation test rooms.