On Mon, 24 Feb 1997, D. R. Chicotel wrote:

> I want to use a PIC to duplicate what a MM5437 Digital Noise Source does.
> The MM5437 is no longer available.  I suspect that I can just create random
> numbers on PORT B and amplify one of the PORT B pins using a LM386 connected
> to a speaker.  This should give the white noise I am looking for.  Does

Heck, you can probbaly do better if you work at it.  Unless I'm mixing the
5437 up with another similar part - and I don't recall there was anything
else quite like it in general use - it had a fairly good spectrum for
measurement applications, but a rather noticeable cyclic element to the
sound.  The latter was a bit of a drawback for use as an audible noise
source in synthesizers...