At 07:01 PM 10/17/01 -0400, Byron A Jeff wrote:
>On Wed, Oct 17, 2001 at 06:03:58PM +1000, Roman Black wrote:
> > Byron A Jeff wrote:
> > >
> > > I'm interested in sound generation right at the moment. The specific
> task is
> > > building a metronome that has a decent sounding, high volume "TOCK"
> sound.
> > > But I figure since there are quite a few issues in terms of
> generating audio,
> >
> > > 5) And finally the metronome question: Any pointers on how to generate a
> > > quality TOCK sound?
> >
> >
> > Ever attached a 555 timer with a square wave
> > output to a speaker?? You get a real good tock
> > sound. :o)
>
>I took 2 minutes to test dumping a cap into a small speaker. I wasn't real
>impressed.

One of my early pyro projects were 'bang simulators' used for doing
rehearsals with actors and such: they used little 4" speakers in a plastic
case.  The actual bang is created by discharging a 10 uF cap charged to ~50
Vdc (six 9V batteries in series) into the speaker.  The discharge mechanism
is a MOSFET driven by a monostable timer.  Its loud but doesn't sound
anything like a metronome.

dwayne



Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax

Celebrating 17 years of Engineering Innovation (1984 - 2001)

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