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Hi all,i am extremely sorry that i am asking a very basic question,The unit of sound/noise is decibels,but unit of attenuation is also decibels/length, so how it could be possible as two are different things.
A decibel (dB) is a unit for measuring the intensity of sound or noise. It is a logarithmic scale that compares the level of sound or noise to a reference point. Decibels are measured using a sound level meter, which detects sound pressure levels and converts them to decibels.
Sound is a physical phenomenon that is produced by vibrations in the air, while noise is any unwanted or unpleasant sound. Sound can be measured in decibels, while noise is a subjective experience and can vary from person to person.
The threshold for human hearing is 0 decibels, and prolonged exposure to sounds above 85 decibels can cause hearing damage. Generally, sounds above 120 decibels can be painful and can cause permanent hearing loss.
No, decibels cannot be added or subtracted in the same way as other units of measurement. Decibels are a logarithmic scale, meaning that every 10 decibels represents a tenfold increase in sound intensity. For example, 70 decibels is 10 times louder than 60 decibels.
There are several ways to protect ourselves from excessive noise exposure. These include using earplugs or earmuffs in loud environments, limiting exposure to loud noises, and keeping a safe distance from sources of loud sounds. It is also important to follow workplace safety regulations and use proper hearing protection when necessary.