ARI 250 - Performance and Calibration of Reference Sound Sources
: Brown Technical Book Store
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.