Help me figure this out

E

Eagle156

2[H]4U
Joined
Jan 21, 2006
Messages
2,242
I have 2x 120mm fans in my case, 1 in the front for intake and 1 LED fan in the back for exhaust and they both supposedly have the same specs (they came with the case). I'm getting pretty iritated from the noise, and I've notced that it gets noticebly quieter when I lower its speed. However, it only spins at around 1440 RPM and is supposed to be quiet. When I take it out of the case and just hold it in my hand I can barely hear it, I just hear a quiet humming sound and hear an annoying high pitched sound from my vid card. What I can't tell however, is how the fuck do I hear the high pitched fan from my vid card LOUDER when I have the fan on than when I have the fan off? I can't hear the case fans, the only thing I can hear is the vid card, so how does it make the vid card louder? Is the fan somehow "transporting" the vid card sound outside? :p I don't get this. :(
 
Most likely due to sound summation...

The "white" noise made by the large fan (white noise is a noise composed of various random frequencies, that are all the same volume) is masking the high pitched whine of the video card, due to the close proximity of both components.

When they're apart, the 120mm fan is unable to mask the noise of the smaller fan, because they're so far apart.

That would be my best guess...
 
Yes, but the its actually quieter when the fan is outside the case than when its inside which makes no sense. :confused:
 
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