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Acceptable noise - dBA - level at some locations

The main advantage with dB(A)- the A weighted noise or sound measurement - is

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

Noise Machine 1 1 79 Inch

A big plus for most people that buy this budget white noise machine is that the sound level is quite loud in comparison with some other popular white noise machines. The biggest negative frequently reported is that the volume knob seems to fail after about 1 year of use. Yogasleep's Dohm (originally called the Sleep-Mate) was invented in 1962, and it's still one of the most reliable sound machines you can buy. At 4 inches tall and 5.5 inches wide, it's a little. A big plus for most people that buy this budget white noise machine is that the sound level is quite loud in comparison with some other popular white noise machines. The biggest negative frequently reported is that the volume knob seems to fail after about 1 year of use.

  • Hatch Rest is a baby sound machine, night light, and time-to-rise sleep trainer. Controlled with your phone, this white noise maker helps everyone sleep better.
  • The best sound machines, noise machines, and white-noise machines on Amazon, according to hyperenthusiastic reviewers, including the best sound machine for baby, the best sound machine for sleep.

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

LocationEffectsMaximum Leq
(dBA)
Time
(hours)
Time of day
Bedroomsleep disturbance, annoyance308night
Living areaannoyance, speech interference5016day
Outdoor living areamoderate annoyance5016day
Outdoor living areaserious annoyance5516day
Outdoor living areasleep disturbance, with open windows458night
School classroomspeech interference, communication disturbance358day
Hospitals patient roomssleep disturbance, communication interference30 - 358day 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

Noise Machine 1 1 79 Resz

  • EPA Protective Noise Levels - The noise level should not exceed certain values to protect public health and welfare
  • Human Effects when Exposed to Low-Frequency Noise and Vibration - Physiological effects from low-frequency noise and vibrations
  • Ldn - Day and Night Sound Level - EPA has defined an A-weighted sound level day and night equivalent for a 24 hour period
  • Leq - Equivalent Sound Level - Equivalent Sound Level - Leq - quantifies the noise environment to a single value of sound level for any desired duration
  • Ls - Sound Exposure Level - Sound Exposure Level - Ls - describes the noise from a variable source
  • Maximum A-Weighted Sound Pressure Levels per Day - Maximum A-weighted sound pressure levels allowed by OSHA
  • Maximum Sound Pressure Levels in Rooms - Maximum recommended sound pressure levels in rooms with activities like kindergartens, auditoriums, libraries, cinemas and more ...
  • NC - Noise Criterion - Noise Criterion - NC - level is a standard describing relative loudness of a space with a range of frequencies
  • Noise Criterion - NC - Online Calculator - An online Noise Criterion - NC - Calculator
  • Noise Exposure - Permissible Level and Duration - Exposure to noise should be controlled so that the exposure is less than a max combination of exposure level and duration
  • Noise from Road Traffic - Estimate noise levels from traffic
  • Outdoor Ambient Sound Levels - Outdoor ambient sound level (dBA) in rural and urban business and industrial environments with or without limited traffic
  • PNC - Preferred Noise Criterion - Noise measurement system for continuous or ambient noise in indoor environments
  • Preferred Noise Criterion - PNC - Calculator - An online Preferred Noise Criterion - PNC - calculator
  • RC - Room Criteria - Room Criteria - RC - measuring background noise in a building over frequencies ranging 16 Hz to 4000 Hz
  • Sound Intensity, Power and Pressure Levels - Introduction to decibel, sound power, sound intensity and sound pressure
  • Sound Power - Sound Power Level from common sources like fans, jet engines, cars, humans and more ..
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