American National Standard for Electroacoustics - Sound Level Meters - Part 2: Pattern Evaluation Tests - Amendment 1( a nationally adopted international standard amendment).

American National Standard Method for Determining the Acoustic Impedance of Ground Surfaces

American National Standard Preferred Frequencies, Frequency Levels, and Band Numbers for Acoustical Measurements

American National Standard for Electroacoustics - Octave-band and Fractional-octave-band Filters - Part 2: Pattern-evaluation Tests (a nationally adopted international standard).

American National Standard for Electroacoustics - Octave-band and Fractional-octave-band Filters - Part 3: Periodic Tests (a nationally adopted international standard).

American National Standard Reference Quantities for Acoustical Levels

American National Standard Method for the Calculation of the Absorption of Sound by the Atmosphere

American National Standard for Electroacoustics - Sound Level Meters - Part 1: Specifications (a nationally adopted international standard). (Revision of ANSI S1.4-1983 (R2006), ANSI S1.4a-1985 (R2006) and ANSI S1.43-1997 (R2007))

American National Standard for Electroacoustics - Sound Level Meters - Part 3: Periodic Tests (a nationally adopted international standard).

American National Standard - Electroacoustics - Sound Level Meters - Part 2: Pattern Evaluation Tests (a nationally adopted international standard)