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  2. Noise regulation - Wikipedia

    en.wikipedia.org/wiki/Noise_regulation

    Since these vehicles can move in large open areas, an objective control, limiting maximum sound levels at a fixed distance is appropriate. Since they also can move in bounded areas near residences, a subjective control is appropriate. Numerous states and communities have objective controls; the most common maximum level is 78 dB(A). Federal law ...

  3. Noise curve - Wikipedia

    en.wikipedia.org/wiki/Noise_curve

    Noise curves are a common way to characterise background noise in unoccupied buildings and spaces. [1] Their purpose is to produce a single-value representation of a complete sound spectrum. International standards organizations ( ISO , [ 2 ] ANSI [ 3 ] and ASA ) recognize the need to objectify judgements on the amount of ambient noise in ...

  4. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    OSHA's PEL for noise exposure is 90 decibels (dBA) for an 8-hour TWA. Levels of 90-140 dBA are included in the noise dose. [4] PEL can also be expressed as 100 percent “dose” for noise exposure. When the noise exposure increases by 5 dB, the exposure time is cut in half. [5] According to OSHA, a 95dBA TWA would be a 200 percent dose. [6]

  5. What is the penalty for violating Charlotte’s noise ordinance ...

    www.aol.com/news/penalty-violating-charlotte...

    According to the noise ordinance, acceptable noise levels are: Sunday-Thursday: 8 a.m.-9 p.m. at 85 decibels and 9 p.m.-2 a.m. (the following day) at 60 decibels

  6. Noise Control Act - Wikipedia

    en.wikipedia.org/wiki/Noise_Control_Act

    The Noise Pollution and Abatement Act of 1972 is a statute of the United States initiating a federal program of regulating noise pollution with the intent of ...

  7. Occupational noise - Wikipedia

    en.wikipedia.org/wiki/Occupational_noise

    Occupational noise is the amount of acoustic energy received by an employee's auditory system when they are working in the industry. Occupational noise, or industrial noise, is often a term used in occupational safety and health, as sustained exposure can cause permanent hearing damage.

  8. Health effects from noise - Wikipedia

    en.wikipedia.org/wiki/Health_effects_from_noise

    Environmental noise regulations usually specify a maximum outdoor noise level of 60 to 65 dB(A), while occupational safety organizations recommend that the maximum exposure to noise is 40 hours per week at 85 to 90 dB(A). For every additional 3 dB(A), the maximum exposure time is reduced by a factor 2, e.g. 20 hours per week at 88 dB(A).

  9. Broadcast-safe - Wikipedia

    en.wikipedia.org/wiki/Broadcast-safe

    Maximum signal level = 120 ... must be as free as possible of Gaussian noise, ... needed to convert these signals to one of the many acceptable broadcast standards ...

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