SPL drop with distance.

Douglas R. Allen

Douglas R. Allen

Sophomore
Jan 11, 2011
297
15
18
Maine USA
A friend is building a Dog Kennel. They would like a print up on how spl drops with distance. I've googled a few things but can't seem to find a simple "Sound drops 6dbs everytime you double your distance" statement to print up for them. Anyone have a good link to a basic sound to distance article?

Thanks;
Douglas R. Allen
 
Re: SPL drop with distance.

Douglas R. Allen said:
A friend is building a Dog Kennel. They would like a print up on how spl drops with distance. I've googled a few things but can't seem to find a simple "Sound drops 6dbs everytime you double your distance" statement to print up for them. Anyone have a good link to a basic sound to distance article?
Click to expand...

I don't have a link to an article on inverse square law, but there is plenty of documentation of the phenomenon. What there is probably less documentation on is how much the annoyance factor of dogs barking goes up with long exposure, or late at night. A dog barking a quarter mile away on a quiet night can be just as annoying as the neighbor's dog at 3pm on a weekday.

Mac
 
Re: SPL drop with distance.

Douglas R. Allen said:
A friend is building a Dog Kennel. They would like a print up on how spl drops with distance. I've googled a few things but can't seem to find a simple "Sound drops 6dbs everytime you double your distance" statement to print up for them. Anyone have a good link to a basic sound to distance article?

Thanks;
Douglas R. Allen
Click to expand...

Obviously it would help to know the size of the woofer........:)
 
 
Last edited:
Re: SPL drop with distance.

Dick Rees said:
Obviously it would help to know the size of the woofer........:)
Click to expand...

Ah yes, the obvious, but it took you to point it out. Literally laughing here.

I think the recently posted rider might cover it.
"At least 14, 20" woofers".

Regards, Jack
 
Re: SPL drop with distance.

Thanks everyone.
There is many different size woofers. Some closer to Doxie tweeters.
About gave smaart a heart attack trying to get them in phase.....

Douglas R. Allen
 
Re: SPL drop with distance.

Would that be a "cross-fidoed" arrangement?

Trying doggedly to be serious here...
Adjustments need to be made to the 6db theoretical ( based only upon distance )
for HF attenuation due to humidity:
http://www.sengpielaudio.com/calculator-air.htm
and ground conditions:
Predicting outdoor sound ( Keith Attenborough, Kai Ming Li, Kirill Horoshenkov )
 
Last edited:
Top Bottom