Anna wrote:
>It is so hard to distinguish where sound is coming from.>>


Do what mechanics do--use a stethoscope. A metal rod or screwdriver makes 
an excellent stethoscope.

Don Penlington


 From the Beach at Surfers Paradise in sunny Queensland.
Computer tutorials, local scenery,  and other things at my website:
http://users.tpg.com.au/deepend/index1.html

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