Re: Transducer advice please
Joseph Hiddink ( vliegschotel@yahoo.com )
Thu, 17 Feb 2000 20:40:35 -0800 (PST)
Ted:
A transducer is anything that changed an
electrical signal into sound: a loudspeasker.
For your experiments, use small tweeters, that
are small loudspeakers made to reproduce high
frequencies even in the twenty thousand cycles.
Yes, we may not hear them, but they enhance the
sound of HiFi equipment.
If a harmonic of a reedy type note falls into the
twenty thousand range (e.g. 25,000 c/s), and a
second note played simultaneously is also in that
range (e.g. 26,000 c/s) the "beat note" between
these two frequencies is 1,000 cycles, which
enhances your sound.
So just get some good tweeters from your local
radio shop. Joe Hiddink vliegschotel@yahoo.com
--- Ted Gallop <gallope@planet.curtin.edu.au>
wrote:
> Hello Keelyers,
>
> 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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