Materials that transmit sound easily are non elastic

Question

Is this true?

Answer 1

Yes, the more rigid something is the better it will transfer the vibrations without losing energy.

Answer 2

Certainly! The denser the medium the greater a sound conducter it is sound travels the fastest through a diamond

Answer 3

This can be proven false if there is a non-elastic material that transmits sound easily.  

Water transmits sound easily.  It is not elastic.

That might be a bad example, since water is a fluid.  However I think your statement is a generalization.  I am pretty sure it is not "true".  It seems to me that non-elasticity is good at transmitting sound in general.

Back in the thirties they built sound concentrating things based on their experience with making megaphones and phonographs, and using the same theories as derived in optics.   Kind of cool.  There was a guy from Yale who did the same thing with microwave radio whose name was Hadden - very important

Answer 4

Well, sound travels faster in a solid steel rod than it would rubber. So I'd have to say yes.