ANSI/ASA S1.6-1984 (R2011)

Vendor Note: This standard defines the preferred frequencies, or nominal band-center frequencies to be used for acoustical measurements.Frequency levels or band numbers are associated with these sets of frequencies and the preferred frequencies are roundedvalues obtained from those for which the corresponding frequency levels or band numbers are integers.

This product referenced by:ASTM E1179-87(1998) - American National Standard Preferred Frequencies, Frequency Levels, and Band Numbers for Acoustical Measurements