# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 10.2.1: By integrating p2(t)


LAeq:(t1, t2) may be directly obtained by integrating the square of the A-weighted sound pressure during a period equal to t2 − t1 in accordance with the formula given in Section 3.2.
Digital or analogue integration may be used, e.g., with an integrating sound level meter.

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Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/10.2.1 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-10.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.