<unk>  "Guidelines for safe listening devices/systems" (formerly F.SLD) is an ITU-T Recommendation, developed in collaboration with the World<unk> ealth Organization specifying standards for safe listening to audio, preventing<unk> earing loss that was first approved in 2018. __TOC__
H.870
J147
F15845
ID2020
ABTL0812
BcIII
VX 
999 