----- Original Message -----
From: Jinx <joecolquitt@CLEAR.NET.NZ>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, February 13, 2002 11:26 PM
Subject: Re: [PIC] Sound generation on a pic "Dong"


> > Voila...
>
> > Dave
>
> I've had a go at your circuit and operation (always in
> the market for more noise)
>
> http://home.clear.net.nz/pages/joecolquitt/davedong.html
>
> but it doesna seem to work as you described. What you
> get is a continuous tone for 1 second. No decay ;-(((
>
> The traces show the ~ 1kHz PIC output and the signal to the
> audio amp
>
> OK (if shorter) for a keyboard beep though
>
> Any ideas for a fixit ? A diode or two ?


how about a three bit r2r ladder ?


>
> PS, based on TMR0 IRQ, no good for 12C users, sorry
>
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>

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