IK pink noise tone? Not sure what the poster had in mid. IIRC pink noise has equal SPL per octave averaged over time vs white noise that has equal SPL throughout the bandwidth. The effect of pinking noise is to reduce the level per Hz at higher, broader, octaves, demphasizing high frequencies. Like white noise, pink noise can be band limited. By its very nature, the instaneous level of either noise source is variable. The balistic response of a sound level meter is often set to slow, so it integrates the flutuations to obtain a more useable reading. Perhaps the poster had in mind narrowly filtered pink noise, but the tighter the band limit the more variable the level balistics.
db
db