Acceptable dBA Noise Levels

Acceptable noise - dBA - levels at some common locations

The main advantages with dB(A) - the A weighted noise or sound measurement - are

  • its adaption to how the human ear responses to sound - the human hearing
  • the possibility to measure noise with low cost instruments

Maximum acceptable Equivalent Sound Level - Leq - at some common locations:

Location Effects Maximum Leq
(dBA)
Time
(hours)
Time of day
Bedroom sleep disturbance, annoyance 30 8 night
Living area annoyance, speech interference 50 16 day
Outdoor living area moderate annoyance 50 16 day
Outdoor living area serious annoyance 55 16 day
Outdoor living area sleep disturbance, with open windows 45 8 night
School classroom speech interference, communication disturbance 35 8 day
Hospitals patient rooms sleep disturbance, communication interference 30 - 35 8 day and night

Related Topics

  • Acoustics - Room acoustics and acoustic properties - decibel A, B and C - Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity and sound attenuation

Related Documents

Tag Search

  • en: leq decibel a level dba noise sound
  • es: leq decibelios un sonido de ruido dba nivel
  • de: leq Dezibel ein Niveau dba Lärm- Ton

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