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The weighting filter A takes off low frequencies. So the measured value in dBA must be less than in dB.

Look up at "A-weighting - Wikipedia".

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11y ago
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6mo ago

Yes, 85 dB A and 85 dB measure sound in the same unit, decibels (dB). However, the "A" designation signifies that the sound measurements have been weighted according to the A-weighting filter, which takes into account how the human ear perceives different frequencies.

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Q: Is 85 dB A the same as 85 dB?
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How strong is sound?

Sound strength is measured in decibels (dB), with a normal conversation around 60 dB, a rock concert around 120 dB, and a jet engine around 140 dB. Prolonged exposure to sounds over 85 dB can damage hearing.


When does the level of sound become bad for hearing?

85 dB is bad for extended periods (8 hours). 100+dB is bad nearly instantly.


How do you explain noise greater then 85-90 decibels can cause loss of hearing?

That tells it all: "Permitted Noise Exposure Time Guidelines - SPL" Sound pressure level Lp and permissible exposure time t: 115 dB = 0.46875 minutes (~30 sec) 112 dB = 0.9375 minutes (~1 min) 109 dB = 1.875 minutes (< 2 min) 106 dB = 3.75 minutes (< 4 min) 103 dB = 7.5 minutes 100 dB = 15 minutes 97 dB = 30 minutes 94 dB = 1 hour 91 dB = 2 hours 88 dB = 4 hours 85 dB = 8 hours 82 dB = 16 hours Lower dBs are said to be harmless.


Short term exposure to noises at 85 decibels or higher can cause what?

You can damage your hearing. It depends also on time. "Permitted Noise Exposure Time Guidelines - SPL" Sound pressure level Lp and permissible exposure time t: 115 dB = 0.46875 minutes (~30 sec) 112 dB = 0.9375 minutes (~1 min) 109 dB = 1.875 minutes (< 2 min) 106 dB = 3.75 minutes (< 4 min) 103 dB = 7.5 minutes 100 dB = 15 minutes 97 dB = 30 minutes 94 dB = 1 hour 91 dB = 2 hours 88 dB = 4 hours 85 dB = 8 hours 82 dB = 16 hours Lower dBs are said to be harmless


What is the enharmic of Db is?

The enharmonic equivalent of Db is C#. Both notes have the same pitch but are spelled differently.


Db is the unit of sound level please tell you full form of the same?

Db stands for "decibels".


What intensity in dB does noise start to become painful?

Noise can start to become painful at around 80-85 dB. Prolonged exposure to noise levels above 85 dB can cause hearing damage. It is important to protect your ears from prolonged exposure to high noise levels.


What sound decibels are harmful?

Sounds above 85 decibels can be harmful, especially with prolonged exposure. Sounds at or above 120 decibels can cause immediate damage to your hearing. It's important to protect your ears in loud environments to prevent hearing loss.


What decibels damage our hearing?

Sounds above 85 dB can cause hearing damage with prolonged exposure. However, sounds over 120 dB can cause immediate damage. It's important to protect your ears from loud noises to prevent hearing loss.


What is OSHA's noise limit?

Effectively, OSHA has two noise limits that apply simultaneously. First, employees may not be exposed to a full-shift (8-hour) time-weighted average noise level of 90 dB (deciBells) or more. This translates to a limit of: 90 dB averaged over an 8 hour day, or 95 dB for 4-hours as long as the rest of the day does not involve exposure to noise greater than 90 dB, or 100 dB for 2 hours, 105 dB for 1-hour, 110 dB for 30 minutes, 115 dB for 15 minutes, and no continuous noise louder than 115 dB In addition, employees who have 8-hour exposures of 85 dB or more must be placed in a Hearing Conservation Program and, in some cases must be provided with hearing protection. The table is a bit different because sounds from 80 dB and above are used in the assessment. This translates to a criterion level of: 85 dB averaged over an 8-hour day, or 90 dB for 4-hours for 4-hours as long as the rest of the day does not involve exposure to noise greater than 80 dB, or 95 dB for 2 hours, 100 dB for 1 hour, 105 dB for 30 minutes, 110 dB for 15 minutes


What The enharmonic of Db is .?

The enharmonic of Db is: C#


Is the key of Db and d major the same?

No, Db has 5 flats whilst D major has 2 Sharps.