Re: Low pass filter on a PIC

"Manfred" <mmornhin@[EMAIL PROTECTED]
> writes:
> [...]

Hi Manfred,

I have the advantage of seeing the other posters' suggestions and
your repsonse, 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).
-- 
%  Randy Yates                  % "She has an IQ of 1001, she has a
jumpsuit
%% Fuquay-Varina, NC            %            on, and she's also a
telephone."
%%% 919-577-9882                % 
%%%% <yates@[EMAIL PROTECTED]
>           %        'Yours Truly, 2095', *Time*, ELO 
 
http://www.digitalsignallabs.com