Keep these comparisons in mind the next time you’re wondering how loud a particular noise is. It’s important to protect your ears from any sound louder than 85 dB, as this can still cause hearing loss over time. So 40 dB is much quieter than either of those sounds and, therefore, won’t be as likely to damage your hearing. For example, normal conversation is about 60 dB, while a lawn mower is somewhere between 90 and 110 dB. If you know how loud 40 dB is, it can be helpful to compare it to other sounds. It’s loud enough to cause physical pain and damage your hearing over time. That’s about the volume of thunder or a gunshot at close range. Write the sound on top and the decibel level below it and then tape over the decibel level using a smaller 3' x 5' piece of paper. Sound levels on the chart below are listed in decibels (dBA) the larger the number, the higher the volume or decibel level. Using the Common Sounds Chart, pick and write out the sound and the decibel level of 20 different noises on individual pieces of white 9' x 12' construction paper. Sound Level Chart Equipment and daily activities at construction job sites can expose workers to high levels of noise. Noise at 120 dB or higher can cause physical pain. Gather materials and make copies of the math worksheet. Prolonged exposure to noise at this level can cause permanent damage to your hearing. That’s about the same volume as city traffic or a vacuum cleaner. Most people begin to experience hearing loss when noise reaches 85 dB. Image Credit: StockLite, Shutterstock At What dB Does Hearing Loss Begin? White noise machines generate calming sounds like rainfall or ocean waves that can help to mask disruptive noises and lull you to sleep. If you find that 30 dB is too loud for you, consider using a white noise machine to help you sleep. However, some people are light sleepers and may even be bothered by noise levels as low as 30 dB. For most people, 40 dB is too loud, as 30 dB is the prescribed noise level for sleep. That day, Redditor BattleCat13 submitted a variation with Chanty Binx at the end of the scale labelled as "a feminist" (shown below, right).Now that you know how loud 40 dB is, you may be wondering if it’s too loud for sleep. That’s the sound of heavy trafficfrom inside a car. Sounds at 80 or 85 dB will damage hearing over time. That’s the sound of a normal conversation between two people. Sounds at or below 70 dB are considered safe for our hearing. Within 14 hours, the post gained over 11,900 points (81% upvoted) and 220 comments on /r/dankmemes. Decibels are the unit of measurement for sound, abbreviated dB. On August 30th, Redditor Davethemann submitted an edited version of a decibel level chart from the infographic database Chart Valley ending with "two black chicks" at the far end of the scale (shown below, left). Within three months, the post received more than 2,000 points (96% upvoted) on /r/me_irl. On May 25th, Redditor whatagaein7 submitted a photoshopped chart representing "a shampoo bottle falling off the ledge in the shower" as a higher decibel level than a "jet take-off" (shown below, right). Within six months, the post gathered upwards of 11,000 reactions, 5,000 shares and 1,200 comments. On February 21st, 2017, the Irreverent Italian Memes Facebook page posted a "Decibel (dB) Range Chart," which ranked "Italian conversation" as the highest dB above "Gunshot, Metal concert" (shown below, left). Prior to being archived, the post received more than 14,100 points (87% upvoted) and 800 comments on /r/pcmasterrace. On June 19th, 2016, Redditor vanjavk submitted a chart titled "Decibel Scale (dBA)" with " Civilization V opening theme" and " Dark Souls 2 grass" listed above a jet takeoff in noise production (shown below).
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