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Technical Discussions
Volker Scherer
Volker Scherer
05:24 Dec-01-1999
sound attenuation and dispersion in gases

I need data for attenuation and dispersion of ultrasound in gases. Also, information on changes of sound velocity with relative humidity is helpful. Where can I read data (on-line tables?) ?

Thanks

Volker


    
 
 Reply 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1261

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1261
06:05 Dec-01-1999
Re: sound attenuation and dispersion in gases
Try looking at Allan Selfridge's Home Page
http://www.ultrasonic.com/
on the left column is an item on Acoustic Propoerties with a variety of options
Included is an Excel spreadsheet from an associate of Dr. Selfridge.


: I need data for attenuation and dispersion of ultrasound in gases. Also, information on changes of sound velocity with relative humidity is helpful. Where can I read data (on-line tables?) ?

: Thanks

: Volker




    
 
 Reply 
 
Volker Scherer
Volker Scherer
06:35 Dec-01-1999
Re: sound attenuation and dispersion in gases
Thank your for helping. The data, however do only provide standard environments and no frequency dependence or attenuation. This part is still open.


    
 
 Reply 
 
PAUL
PAUL
00:58 Aug-21-2000
attenuation
these are question's for a assignement of mine

WHAT PROPERTIES OF THE TRANSMISSION LINE CAUSE THIS ATTENUATION
HOW TO OVERCOME ATTENUATION
HOW TO CHANGE FOR TWO-WIRE TO FOUR-WIRE SYSTEM

i hope you can help me with these!!!!!!
thanks


    
 
 Reply 
 

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