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ARI 250-99
- Performance and Calibration of Reference Sound Sources
- standard by Air-Conditioning, Heating, and Refrigeration Institute (formerly ARI), 07/01/1999
- Publisher: ARI
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The purpose of this standard is to: 1) frequency is the cube root of two times the lowest. Theestablish the performance characteristics of a reference one-third octave bands used in this standard are defined in sound source, 2) define the acoustical calibration ANSI Standard S1.11.procedures, and 3) define the method for transfer of calibration from a primary to a secondary or working reference sound source. This standard applies to all reference sound sources used in conjunction with ARI sound rating standards and covers the one-third octave band frequencyrange from 50 to 10,000 Hz.
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