Re: Low pass filter on a PIC

Hi Randy,

>I have the advantage of seeing the other posters' suggestions and
>your repsonse,

For some reason my follow-up ended up posted as a new thread! I don't know
if I pressed the wrong button, or if it happened for some other reason. So
now we have two threads with this...

> but how about the following:
>
>  y[n] = x[n] - 0.61803 * x[n-1] + x[n-2]
>
>? This is an FIR notch filter with a notch right at 20 Hz. 
>The 0.61803 term is 2*cos(0.4*pi).

But I don't need a notch filter! I need a low pass... Anyway, it's
interesting! 

I will reply to the other responses in the other thread, to try keeping
some sort of order.

Manfred.