scope:

This standard applies to all Reference Sound Sources used in conjunction with ARI sound rating standards and covers the one-third octave band frequency range from 50 to 10,000 Hz. This standard also includes calibration over a limited frequency range. Multiple Reference Sound Sources may be used to cover the entire frequency range from 50 to 10,000 Hz.

Purpose. The purpose of this standard is to establish the performance characteristics of a Reference Sound Source, define the acoustical calibration procedures, and define themethod for transfer of calibration froma Primary to a Secondary orWorking Reference Sound Source.