How Many Decibels Are Too Loud?
A decibel is a unit used to measure the intensity of a sound. Regular, prolonged, and unprotected exposures to loud sounds can be hazardous and result in partial or full hearing loss. By understanding the decibel scale as well as the type of decibel meters available, you determine whether you need to monitor sound in your home or workplace, and if so, what instrument will suit your requirements.
What are Decibels?
A decibel is a relative unit of measurement for measuring the intensity of sound that is equal to one-tenth of a 'bel.' The decibel scale (dB) is logarithmic, meaning for every 10 dB increase, the increase in sound intensity is 10-times. For example, a 30 dB sound is ten times more intense than a 20 dB sound. The decibel scale begins at 0 dB, which is the quietest audible sound. The loudest possible noise for the human ear is 194 dB.
The Instrument Choice Scientists have prepared a table (below) featuring the typical decibel intensity levels of everyday sounds.
![2020-07-16_12-]lkihujghfdgsdffjg13-45.jpg?Action=thumbnail&algorithm=fill_proportional&width=1201](https://www.instrumentchoice.com.au/2020-07-16_12-%5Dlkihujghfdgsdffjg13-45.jpg?Action=thumbnail&algorithm=fill_proportional&width=1201)
How Loud is Too Loud?
85dB (A): Regular and prolonged exposures to noise at or above 85 dB(A), averaged over eight hours per day, are considered hazardous.
100dB(A): Regular and prolonged unprotected exposure of more than fifteen minutes per day risks permanent hearing loss.
110dB(A): Regular and prolonged unprotected exposure of more than 1.5 minutes per day risks permanent hearing loss.
Types of Decibel Meters (Sound Level Meters)
The Instrument Choice Scientists have prepared some excellent representative examples of decibel meters. If you are looking for a decibel meter for the home or a particular scientific, commercial, or industrial application but aren't sure which device meets your requirements, contact us!
Type 1 Sound Level Meter and Data Logger
Product Code: IC-SL4033SD
The IC-SL4033SD is an innovative decibel meter that measures from 30-130dB and utilises an SD card to store results. The inclusion of an SD card means that you don't need extra software to view your results. After capturing your reading, you simply pull out the SD card and plug it into a computer, downloading your results as a .csv file.
Instrument Choice recommends the IC-SL4033SD for professional applications where type 1 accuracy is required and data logging is essential. For example detection of hazardous sounds in the workplace and environmental monitoring.
Handheld Digital Sound Level Meter
Product Code: C-DSM1
The C-DSM1 measures sound levels from 30 to 130dB. It can function as a handheld unit or attached to a tripod. A and C weightings provide a true correlation with the response of the human ear, and the unit has a user-selectable slow or fast response time.
The C-DSM1 is the perfect sound level meter for clubs, PA systems, and car audio installers. It ships with a windsock and a carrying case for easy portability and usage on the go.
Sound Level Meter (Class 2)
Product Code: IC-CENTER32
The Center 32 Sound Level Meter is a Class 2 decibel meter that features fast and slow time weighting, A and C frequency weighting, has a minimum and maximum recording functionality, and accurately measures sound level from 30 to 130dB.
The Center 32 Sound Level Meter is a popular choice for basic sound level investigations in the home or workplace.
Conclusion
Prolonged exposure to intense sounds can result in permanent hearing damage. Decibel meters measure, and in many cases, log these sounds. These devices are deployed in a range of workplace applications to detect hazardous sound levels as well as help plan for appropriate protective equipment and procedures in workplace settings. Robust and cost-effective models are available for homeowners concerned about noise levels in their environment.
For more information on decibel meters, including a breakdown of the types and classes, read the Instrument Choice article 'What is the difference between Class 1 and Class 2 sound level meters?' or watch the video below.
For more information on decibel meters, or to help find the best meter for your needs, speak with an Instrument Choice Scientist, we're here to help! Call 1300 737 871 or email [email protected].
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