>Howdy,
>
>Has anyone tried to make a PIC produce white noise in the audio range?  Just
>like Dilbert, they have "Upgraded" us from offices to cubicles.  The noise
>level
>makes thinking difficult.  I want to make a system to produce modulated white
>noise as a masking signal.  I have used audio tapes of the ocean that work
>ok as
>a masking signal, but rewinding the tapes gets to be a hassle when you have to
>do it all day long.   I have a circuit to do this via analog means, but it
>requires a ton of resistors and caps.  Therefore I would like to use a PIC to
>generate all of the signals and then just have a resistive summer and an output
>amp to drive a set of headphones.   Any thoughts on how to make the PIC
>generate
>white noise, or "pink" noise?  I can write all of the loops etc, I just do not
>know how to randomize it.  Thanks.
>
>------ Steve

White noise is truly random. Pink noise is not truly random, but may be
sufficiently so for some purposes. Green noise is your neighbor mowing his
lawn at 7AM on a Saturday morning :-)

Reg Neale