# The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992, Paragraph 8.6.1: Extraneous noise


The average sound pressure level over the measuring surface, calculated in accordance with the method described in 8.1, shall be corrected, if necessary, to take account of the extraneous noise determined in accordance with the method described in 8.2. The correction K1, in dB, which shall be subtracted from the average sound pressure level over the measuring surface is given in Table II.
Table II
Difference (in dB) between the sound pressure level calculated when the sound source is operating and the sound pressure level due to extraneous noise alone
Correction K1 in dB
less than 6
no valid measurement
6
1.0
7
1.0
8
1.0
9
0.5
10
0.5
more than 10
no correction

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Source: https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/8.6.1 (the official version)
Page: https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-8.6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.