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Acoustics of fog

Rich Barton (3923)

Open Guitar Forum · 12/30/2000 7:49 PM
It 00.35am nottingham time and i've just took the dog out .Its a bit foggy outside and strangly its very quiet.Does fog being water vapour dampen noise.YES i know its a weird question but i've never noticed it before.
RICH
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Re: Acoustics of fog

12/30/2000 9:24 PM

Shawn Blackburn (1658) wrote:

?

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Re: Acoustics of fog

12/30/2000 9:28 PM

Jason Tafilowski (1468) wrote:

Lets just say it does. Yes Rich it does dampen noise.

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Re: Acoustics of fog

12/31/2000 1:21 AM

Bruce Maag (15581) wrote:

Probably not. Vapors, water or gas tend to amplify sound frequency. Fact

But the dog, depending on it's size, makes an excellent noise barrier.

You don't by any chance own the Barrier Terrier breed of dog do you. This would explain the phenom.

You probably did not realize it's noise dampening effect, because it is slowly growing up. Once the Barrier Terrier got to the correct elevation, the effect hit all at once.

Some things are faily easy to explain. Not Fact

And I am full of it tonight. Fact

Moi



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Re: Acoustics of fog

12/31/2000 2:12 AM

Carl Anderson (2230) wrote:

Hmmm... Bruce seems to be pretty knowedgeable on this subject..hahaha...and any other for that matter. Tell me Bruce, how many beers did you have before you posted this?

HAHA. Joke. Not funny. Fact






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Re: Acoustics of fog

12/31/2000 2:52 AM

Bruce Maag (15581) wrote:

No beer - Probably half asleep

Nighty night



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Re: Acoustics of fog

12/31/2000 3:14 AM

Carl Anderson (2230) wrote:

yeah, i know how that is. i post something at like 11:30 or 12:00, go to bed, wake up the next morning for some Wholenote and orange juice, and I read my post an say "why the hell did i write that? what was I thinking."

oh well. that kink of suff makes for funny posts.

Calr aNdrenos
teh iCepikcre



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Re: Acoustics of fog

12/31/2000 9:35 AM

Bruce Maag (15581) wrote:

Ya - I just got up, and I can see some of the goofy stuff I posted last night (up til 3:00am) is putting me to work, explaining myself.

Even put up a lesson, that I might have reconsidered not putting up, if I was awake.

Oh well when your an addict those things go with the territory.

And your right, those midnight posts make for some good reading.

Moi

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Re: Acoustics of fog

12/31/2000 11:58 AM

Michael Pankonien (948) wrote:

Sound travels through an elastic medium as a longitudnidal wave and is affected by density. Hence the old, "no sound or noise in a vacum", statements that we have all heard in science class. I don't have my acoustic engineering text available right now, but as far as the speed or the velocity of sound (or noise) is concerned, water vapor (fog) mixed homogeneously with air will present a more dense, mass per unit volume, path for sound pressure and it will travel faster. Dampening or attenuniation is frequency dependent, high frequencies are more directional or line of sight and can be damped easier, whereas low frequencies just keep on rolling and are harder, hence the "booming" sound of your neighbors stereo system or their 100 watt Marshall stack (grin).

Cutting the geek talk and giving a simple answer, yes, fog will dampen sound, the higher frequencies will not travel as far as they would given lower relative humidity.




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Re: Acoustics of fog

12/31/2000 1:31 PM

Jason Tafilowski (1468) wrote:

Wow good answer



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Re: Acoustics of fog

12/31/2000 1:33 PM

Rich Barton (3923) wrote:

Thanks ,But as some-one said earlier WHY DID I POST THIS QUESTION
RICH



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Re: Acoustics of fog

12/31/2000 1:44 PM

Jason Tafilowski (1468) wrote:

Well you were right its a good fun fact Rich fog dampens (pun intended) sound.



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Re: Acoustics of fog

12/31/2000 2:27 PM

Rich Barton (3923) wrote:

LOL

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