MLchartDataset catalogue

Day-Night Sound Level

Term · Environment · MLC-T-ENV-007369

24-hour time of day weighted equivalent sound level, in decibels, for any continuous 24-hour period, obtained after addition of ten decibels to sound levels produced in the hours from 10 p.m. to 7 a.m. (2200-0700). It is abbreviated as Ldn.

Table 1. Record
IdentifierMLC-T-ENV-007369
FieldEnvironment
AbbreviationLdn
References40 CFR 201.1 (2013 CFR)
Record as JSON 
{
  "id": "MLC-T-ENV-007369",
  "term": "Day-Night Sound Level",
  "field": "Environment",
  "definition": "24-hour time of day weighted equivalent sound level, in decibels, for any continuous 24-hour period, obtained after addition of ten decibels to sound levels produced in the hours from 10 p.m. to 7 a.m. (2200-0700). It is abbreviated as Ldn.",
  "abbreviation": "Ldn",
  "references": [
    "40 CFR 201.1 (2013 CFR)"
  ],
  "url": "https://mlchart.com/terminology/environment/day-night-sound-level/"
}

Record 7,369 of 30,736 in Environment terminology (MLC-0121). Request the full dataset.