![]() Take a look at dB level loudness description to help in your understanding. To allow you to gain a better understanding of the loudness of different sounds, some common sounds you have likely experienced have been grouped together below. This way they can more easily test if sounds are too loud for humans. These weightings are used because they represent the level difference at different frequencies similar to the human ear (which will be discussed in more detail later). If a professional acoustician were to be investigating the loudness of a workplace, they would likely be following The Control of Noise at Work Regulations 2005 act, which uses both dBA and dBC for measurements. The dB scale is logarithmic, meaning that a 10 dB increase actually means that the sound level perceived is doubled and a 10 dB decrease means that the sound level perceived is halved.Īside from dB SPL, there is also the dBA and dBC weightings. This is a scale where 0 dB SPL is the lowest level sound audible to humans and sounds are louder the greater the dB. ![]() When discussing how loud something is in dB, people are often referring to the dB Sound Pressure Level, which is often shortened to dB SPL. The word decibel is derived from the bel, with the inclusion of “deci-” to signify that a decibel is one-tenth of a bel. The decibel is a scale commonly used today to measure sound loudness. Bell is most famous for his invention of the telephone. This is because loudness is referred to as the level that was perceived by the listener, which, as will be discussed, can vary wildly between two people for the same sound!īell Telephone Laboratories, now known as Bell Labs, created a unit for sound measurement called the “bel”, after its founder, Alexander Graham Bell. Decibels are often used to discuss how loud something is, however, using the term “loud” is not 100% factually correct. How Can You Measure the dB of Different Sounds Yourself?ĭecibels, or dB, are a measurement unit to allow the representation of a sound’s amplitude.What Should You Consider When Recording Audio at Different Levels?.What Are the Quietest and Loudest Sounds that You Can Hear?. ![]() Do We Interpret Sounds Differently as We Age?.What is the Relationship Between Frequency and Loudness?.
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