wave type for audio transmission

[rajaram04]

Hello
Which type of electromagnetic wave is best for audio wave transmission and what type of transmission system is best ???
What frequency range we should consider ?

 

[betwixt]

Radio waves, but you could use optical or even air pressure waves.
Assuming you mean radio waves, anything from about 15KHz up to 300GHz should be OK.

Brian.

 

[crutschow]

Hello
Which type of electromagnetic wave is best for audio wave transmission and what type of transmission system is best ???

Define "best".
What is the purpose of this audio transmission?