How loud exactly IS 30db?

[MistaTastyCakes]

I'm looking into getting three ~30db Panaflos and I was wondering roughly how loud they'd be in a real world sense, not numerical. Comparisons? I overclock...I was wondering too, if putting lower output Panaflos in my case would raise my temps greatly or not. I idle at around 42C and under load I'm at 46-47C. In the front of my case I currently have an 80mm Sunon, in the back a 92mm Sunon, and on my HS an 80mm Delta. I'd be replacing 'em with their 80 and 90mm low output Panaflo counterparts.

Thanks!

 

[gdawson6]

30 dba isnt bad. You should be able to hear them but i dont think they would bother you that much. I deal with my Delta on my heatsink and its nearly 50 dba.

 

[RaynorWolfcastle]

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!

about ^^^ that loud. I hope it gives you a good idea...

On a more serious note, check This out. That'll give you an idea. They say it's akin to a quiet library.

-Ice

 

[PCHPlayer]

I found this in a newgroup. Don't know how accurate it is.

0 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> generally accepted as the lowest limit of human audio perception; you're unlikely ever to hear anything this quiet because of internal body noises
10 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> a _very_ quiet room (no wind, cars, etc.) like a well-insulated recording studio
20 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> outside in the country side with no wind or animals
30 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> inside a library
40 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> someone talking quietly in the same room
50 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> someone talking at a distance of a metre or so; a quiet orchestral passage
60 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> in a car, with windows down, in the city; playing a guitar
70 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> somebody shouting nearby, outside
80 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> shouting in the same room; a <B style="COLOR: black; BACKGROUND-COLOR: #ffff66">loud</B> orchestral passage
90 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> machine-shop floor, drills and machines going; propeller aircraft engines nearby; pleasantly <B style="COLOR: black; BACKGROUND-COLOR: #ffff66">loud</B> music
100 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> someone shouting close to your head; car horns
110 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> very <B style="COLOR: black; BACKGROUND-COLOR: #ffff66">loud</B> rock concert; commercial jet aircraft taxiing at 100 m
120 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> very_ <B style="COLOR: black; BACKGROUND-COLOR: #ffff66">loud</B> sound: jet engines; jackhammers up close (threshold of feeling)
130 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA </B> too <B style="COLOR: black; BACKGROUND-COLOR: #ffff66">loud</B>: explosions; stock car engine up close (threshold of pain)
140 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> some sounds have transients up here or beyond; drums with your ear up close, big explosions
150 <B style="COLOR: black; BACKGROUND-COLOR: #a0ffff">dBA</B> can do immediate damage
160 dBA Delta fans (just kidding)

 

[daverules]

here, I cleaned up PCHPlayer's post:

0 dBA generally accepted as the lowest limit of human audio perception; you're unlikely ever to hear anything this quiet because of internal body noises
10 dBA a very_ quiet room (no wind, cars, etc.) like a well-insulated recording studio
20 dBA outside in the country side with no wind or animals
30 dBA inside a library
40 dBA someone talking quietly in the same room
50 dBA someone talking at a distance of a metre or so; a quiet orchestral passage
60 dBA in a car, with windows down, in the city; playing a guitar
70 dBA somebody shouting nearby, outside
80 dBA shouting in the same room; a loud orchestral passage
90 dBA machine-shop floor, drills and machines going; propeller aircraft engines nearby; pleasantly loud music
100 dBA someone shouting close to your head; car horns
110 dBA very loud rock concert; commercial jet aircraft taxiing at 100 m
120 dBAvery loud sound: jet engines; jackhammers up close (threshold of feeling)
130 dBA too loud: explosions; stock car engine up close (threshold of pain)
140 dBA some sounds have transients up here or beyond; drums with your ear up close, big explosions
150 dBA can do immediate damage
160 dBA Delta fans (just kidding)

 

[VBboy]

daverules, thanks, that was much easier to read

 

[PCHPlayer]

Hmmm, sorry about that. It looked OK in my editor. Thanks for cleaning it up.

 

[Giscardo]

Damnit i didn't scroll down until after I'd already deciphered the garbled post.

 

[crash2much]

You should love this!!!
They've recorded the sound of various fans so you can compare .
Props go out to muzzy, who originally posted this sight some time ago.