Bill,

 Is there any way to rewrite the POT READING ROUTINE to sample at a
 faster rate, and thus move the noise to higher than hearing range?


                                            Regards,

                                              Jim



On Wed, 03 May 2000, Bill Pierce wrote:

>
> I'm working on a project that uses an ISD2560 sound recorder with an SX as
> the controller. The circuit is working but there is background noise
> generated by oscillations that occur when I read 2 pots that control the
> frequency of the playback. If I add delays between the code that reads the
> pot I get a lower pitch but I can't get it to go away completely without
> making the response time to slow. I tried putting filter caps of different
> sizes but no success. Any suggestions would be great, I'm a software guy and
> this hardware stuff kills me sometimes.
>
> Thanks
>
> Bill
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jim@jpes.com