About sound measuring

[b4u]

Hi,

I'm thinking about getting 2 extra fans and a filter for my computer. Searching online, I find various specifications, one of them being a "sound measuring" or dBA.

Can anyone explain to me what that is?

Are bigger numbers better or worse? (for low noise, that is )

Can anyone give me some real world examples? Like for instance: dBA=n is the same as the sound a mouse clicks (it's a stupid example, I know ) ... just so I can make some simple comparissons ...

Also, normally how much dBA a PSU fan will make?

Thanks

 

[TheCorm]

lower dBA is better....

not sure on any real world examples....i'm sure someone else here will...

Fans on PSU's tend to vary between 25 and 40ish dBA I believe.

 

[AlienCraft]

Originally posted by: b4u
Hi,

I'm thinking about getting 2 extra fans and a filter for my computer. Searching online, I find various specifications, one of them being a "sound measuring" or dBA.

Can anyone explain to me what that is?

Are bigger numbers better or worse? (for low noise, that is )

Can anyone give me some real world examples? Like for instance: dBA=n is the same as the sound a mouse clicks (it's a stupid example, I know ) ... just so I can make some simple comparissons ...

Also, normally how much dBA a PSU fan will make?

Thanks

dbA is a reference to the "A" scale weighting that the measurement was conducted under.
There are several scales used to reference the logrithmic scale, that sound behaves under, to our ear which has a completely different response scale.
There is also "C" weighting.

The A scale focuses more on speech frequencies between 500 and 6300 hz. The C scale is referenced to the ANSI Uniform Testing protocol.


More about hearing, measurement and protection than you asked about initially.

 

[Lonyo]

Common machine noise levels (Vacuum cleaner is most useful I guess )