scope:

This standard applies to all Reference Sound Sources used in conjunction with AHRI 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 the method for transfer of calibration from a Primary to a Secondary Reference Sound Source.

Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. 

Review and Amendment. This standard is subject to review and amendment as technology advances.