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  2. The Best Decibel Meter Apps In 2024 - AOL

    www.aol.com/best-decibel-meter-apps-2024...

    Our favorite decibel apps include: Decibel Pro, Decibel X, NIOSH SLM app (for iPhone), and Sound Meter & Noise Detector (for Android) Apple products allow passive alerts to help prevent exceeding ...

  3. Loudness - Wikipedia

    en.wikipedia.org/wiki/Loudness

    When sensorineural hearing loss (damage to the cochlea or in the brain) is present, the perception of loudness is altered. Sounds at low levels (often perceived by those without hearing loss as relatively quiet) are no longer audible to the hearing impaired, but sounds at high levels often are perceived as having the same loudness as they would for an unimpaired listener.

  4. Decibel - Wikipedia

    en.wikipedia.org/wiki/Decibel

    The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12). [1] [2]

  5. Phon - Wikipedia

    en.wikipedia.org/wiki/Phon

    Equal-loudness contours. The phon is a logarithmic unit of loudness level for tones and complex sounds. Loudness is measured in sones, a linear unit.Human sensitivity to sound is variable across different frequencies; therefore, although two different tones may present an identical sound pressure to a human ear, they may be psychoacoustically perceived as differing in loudness.

  6. Understanding Acoustic Trauma: Signs, Causes, and Prevention

    www.aol.com/understanding-acoustic-trauma-signs...

    The best way to preserve hearing is through prevention of noise trauma with hearing protection in loud environments, safe headphone listening levels, and awareness about the decibel level of your ...

  7. NIOSH Power Tools Database - Wikipedia

    en.wikipedia.org/wiki/NIOSH_Power_Tools_Database

    By making people aware of how loud power tools actually are, NIOSH is attempting to encourage the design and production of quieter power tools and the proper use of hearing protectors when using such tools. The database is also part of a larger NIOSH prevention initiative called Buy Quiet.

  8. Day-night average sound level - Wikipedia

    en.wikipedia.org/wiki/Day-Night_Average_Sound_Level

    There is a similar metric called day-evening-night average sound level (Lden or DENL) commonly used in other countries, or community noise exposure level (CNEL) used in California legislation; that is, the DNL with the addition of an evening period from 19:00 to 22:00 when noise level measurements are boosted 5 dB (or 4.77 dB in the case of ...

  9. 3M and Dangerous Decibels Host International Conference ... - AOL

    www.aol.com/news/2013-10-07-3m-and-dangerous...

    3M and Dangerous Decibels Host International Conference and Public Workshop on Hearing Loss and Prevention in Youth Weeklong series of events aim to raise awareness and educate professionals, ...