Triggered wave generator/piezo questions

[Prospective Volition]

Heh heh ... I figured out why it wasn't working .... It wasn't connected 
properly. I built the basic synth drum circuit. Can anyone explain how a 
white noise generator works? Is it just higly amplified circuit noise? Also, 
can anyone point me to a simple white noise circuit and/or an automatic gain 
control circuit.

Thanks

Vol



>Howdy....
>
>At 01:56 PM 29/08/99 NZST, Prospective Volition wrote:
> >I have built on a breadboard one sectionof the paia synthdrum. It seems 
>to
> >work as it self oscillates when the Q value is high. i.e adjusting the
> >resistor. But I can't get the piezo to trigger it. Is there any other way 
>I
> >can get it to trigger to test it.
>
>
>A very crude way of testing it is to put a NO momentary swich between +5V
>and the trigger input. Hit the switch quickly and you should get a DONK.
>
>BTW: V+ on the paia drum board should be 9V to 12V, while the +5V should be
>(obviously) +5V. Which drum did you build? I'm not a big fan of the gated
>noise for snare on the paia board. Too much bleedthrough on mine.
>
>Regards,
>Stewart.
>
>
>
>
>

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