The quantities to be measured under the test conditions described below, are the A-weighted sound levels for "fast" or "slow" meter response as defined in the American National Standard S1.4-1971.
40 C.F.R. § 201.21
The quantities to be measured under the test conditions described below, are the A-weighted sound levels for "fast" or "slow" meter response as defined in the American National Standard S1.4-1971.
40 C.F.R. § 201.21