I want to conduct some 'tests' using very high frequency sound waves
produced from a small or very small source.
I keep hearing the word 'transducer' used, but have never really understood
what a 'transducer' is.
Can someone please advise me of what is the best apparatus for producing
this type of sound. I would need to be able to adjust frequency and,
ideally, control the phases of more than one output (i.e. to create
interference patterns).
Thanks for your indulgence.....
Ted Gallop
Perth, Australia
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