The title of this Standard is proposed for change, removing the term “digital” as most current equipment is digital. The intent of the modifications to the body of this Standard is to combine E1503, E1014, and E1780, as these three Standards contain significant sections of identical information. E1503 was intended for large projects measured over long periods of time with a large number of locations. E1014 was intended for measurements at a single location with varying sound. E1780 was intended specifically for measuring sound from an identified source to characterize the output of the sound from the source under study.