PD ISO/TR 25417:2007

1   Scope This Technical Report specifies definitions of acoustical quantities and terms often used in documents on noise measurement prepared by Technical Committee ISO/TC 43, Acoustics , Subcommittee SC 1, Noise , together with their symbols and units.The main purpose is to harmonize the terminology used in documents prepared by ISO/TC 43/SC 1, thus to avoid proliferation of diverging definitions. However, this Technical Report may be applied to other purposes as well.