{
  "url": "https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-3.4",
  "json_url": "https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992/schedule-3/paragraph-3.4.json",
  "legislation": "uksi/1992/168",
  "legislation_title": "The Lawnmowers (Harmonization of Noise Emission Standards) Regulations 1992",
  "legislation_url": "https://openlegislation.uk/lawnmowers-harmonization-of-noise-emission-standards-regulations-1992",
  "path": "schedule/3/paragraph/3.4",
  "kind": "paragraph",
  "number": "3.4",
  "heading": "Sound power level LWA is obtained by applying the weighting A to the sound power level LW.",
  "text": "The sound power level LW expressed in dB, of a sound source is defined by:\nLW=10log10WW0 where:\nW is the total sound power generated by the sound source, expressed in watts;\nW0 is the reference sound power, equal to 10−12 W.\nThe value LWA of the A-weighted sound power level, expressed in dB, is obtained by applying the weighting A to the measuring system.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1992/168/schedule/3/paragraph/3.4",
    "retrieved_at": "2026-10-29T14:30:19.442341+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}