Sch 1 s 3Sound level instrument

Sch 1 s 3 Sound level instrument

3 Sound level instrument

The sound level instrument must—

(a) meet the specifications of a precision (Class 1) or general purpose (Class 2) sound level meter set out in—

(i) for a sound level meter manufactured before 2019—IEC 61672.1:2013, Electroacoustics – Sound level meters – Part 1: Specifications or IEC 61672.1:2004, Electroacoustics – Sound level meters – Part 1: Specifications, or

(ii) otherwise—AS/NZS IEC 61672.1:2019, Electroacoustics—Sound level meters, Part 1: Specifications, and

(b) be set to a Z-weighting frequency curve as specified in the document, and

(c) use a noise descriptor for measurement that is the LZpeak level, and

(d) use a sampling rate of 48kHz or other rate approved by the EPA in writing.