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Posted: 11/21/2012 4:05:23 PM EDT
Dakota Silencer posted this on their FB page. It is a nice simple chart. A lot of people ask "How much does a 'silencer' reduce the noise?" 
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Every 3db reduction in sound is a reduction of 50%. For this reason, the difference between 167DB and 140DB is freaking huge, nearly a 95% reduction in sound levels! This doesn't show up well in their chart.
I realise, each bar represents 10 DB, but I wish the grapic would better represent the fact that a 132DB rifle shot is twice as loud as a 126DB rifle shot. |
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Quoted: Every 3db reduction in sound is a reduction of 50%. For this reason, the difference between 167DB and 140DB is freaking huge, nearly a 95% reduction in sound levels! This doesn't show up well in their chart. I realise, each bar represents 10 DB, but I wish the grapic would better represent the fact that a 132DB rifle shot is twice as loud as a 126DB rifle shot. I knew db point reduction and actual sound reduction was not linear, but I was unsure of the actual curve. |
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Quoted:
Every 3db reduction in sound is a reduction of 50%. For this reason, the difference between 167DB and 140DB is freaking huge, nearly a 95% reduction in sound levels! This doesn't show up well in their chart. I realise, each bar represents 10 DB, but I wish the grapic would better represent the fact that a 132DB rifle shot is twice as loud as a 126DB rifle shot. Also realize that humans' perception of sound is also not linear. http://trace.wisc.edu/docs/2004-About-dB/ Perception of Loudness (20dB = 4x)
Interestingly, our perception of loudness is not the same as sound pressure level. Although the actual formulae is somewhat complex, as a rough rule of thumb, an increase of 10db SPL is perceived to be approximately twice as loud. Thus a 20 Db gain would seem to be about 4 times as loud. And a 40 Db gain would seem to be about 16 times as loud. |
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