scope:

Applies to instruments for measurement of A-frequency-weighted sound exposure resulting from steady, intermittent, fluctuating, irregular, or impulsive sounds. Specifies acoustical and electrical performance requirements for meters of one accuracy grade that corresponds to that for an integrating sound level meter complying with type 2 requiements of IEC 804. Sound exposure is a physical measure that accounts for both the sound pressure and its duration, at a given location, through an integral-over-time of the square of instantaneous frequency-weighted sound pressure.