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How to calculate db part 2!
Make sure to download the program!
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Make sure to download the program!
According to the latest official figures, 43% of all statistics are totally worthless..
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cool, that will come in handy. -
Not to be a party pooper, but...
The only real way to accurately calculate the noise of a running system is to check it with a calibrated SPL meter or spectrum analyzer. Additionally understanding what the differences are between the different weighting curves are is also most essential.
This app regardless of accuracy cannot do this and should be taken with a grain of salt."Be who you are and say what you feel, because those who mind don't matter, and those who matter don't mind." -- Dr. Seuss
"Always do good. It will gratify some and astonish the rest." ~Mark TwainComment
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still unpooped
there are other applications
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If you have a calibrated microphone (can be very expensive) and audio app like CoolEdit and known input/output levels from a quality sound card and amp (must be flat with known responce curve of each) it can be measured accurately."Be who you are and say what you feel, because those who mind don't matter, and those who matter don't mind." -- Dr. Seuss
"Always do good. It will gratify some and astonish the rest." ~Mark TwainComment
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Why all the fuss? If it's too loud for me, it's too loud, and something needs to be done about it, period
AZComment
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The author of the app states this as well Greebe! Other things you should take in to consideration is the frequency! A 20 db fan might sound louder then a 30 db! But still I think this is a cool app!
According to the latest official figures, 43% of all statistics are totally worthless...Comment
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AFAIK this is NOT the case if it's db(a) (a-weighted decibel). But of course two same fans with 20 dbA each may be louder or quieter than two fans with 20 dbA each and different sound characteristics (ie. one humming rather deeply, and the other shrieking).
AZComment
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... and it does not take into consideration (other than what AZ has already stated and is correct on) that the SPL of fans are typically measured on Axis. It does not take into consideration off axis noise levels, whether the case is closed up or if dampening material has been used or harmonics produced/induced when more than one fan is used.
This app is most elementary and basic in it's guise.
The last thing we need is for your typical fps counting nits claiming that their system runs no louder than X dB when in fact they are most clueless in what this app does for them."Be who you are and say what you feel, because those who mind don't matter, and those who matter don't mind." -- Dr. Seuss
"Always do good. It will gratify some and astonish the rest." ~Mark TwainComment
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cool for doing a few s/n calculations etc..
But for noise level's from PC fans, I use my ears....
noise is subjectively irritanting, if me the subject is irritated it is to loud.
Fans speed is my major concern,
hi speed=hi frequency=hi irritation
I think a 50db 1000 RPM fan would be kinda cool...
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If it is a-weighted db (usually written as dbA or db(A)), frequency is taken into account, thus a 50 dbA 1000 rpm fan should be as loud as a 50 dbA 7000 rpm one. Of course, you may find one or the other more irritating, depending on your ears, taste, etc.
The problem with db is that it's a logarythmic scale, and thus not easy to interpret. Sone is much better, as it's linear.
50 db is way too loud any way you look at it anyway
AZComment
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