>> Using you suggestion, how do I adjust volume, and tone on a set of
>> headphone speaker(s)?
>

>To adjust the volume, use PWM.  This is easy if you are using one of
>the PICs with PWM - you can even generate sine waves and arbitrary
>waveforms.  It's still fairly easy if you have to program the PWM
>yourself.
>
>Regards,
>SJH
>Canberra, Australia
>

What is PWM?

If I want to adjust just the volume, what would you do?

Jean