Tracy Allen: digital filtering
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Posts: 46,084
Hey Tracy, I've been using the ideas on your web page a lot lately
(although I'm using PicBasic Pro and a Pic 16F877). In particular, I just
"installed" a digital filter to filter the A/D for my amp-hour meter - boy,
does that ever work nice!
Now, as it turns out, I'm using a floating-point math package for most of
my calculations ( one could use the PAC-II from Al Williams if using a
Stamp). So I'm interested in more information on digital filtering - I'm
not restricted to using the Stamp's integer math. Can you point me to some
reference information?
Thanks
By the way, recall the thread I started on computing a power (x^1.237)? I
used floating point and a 3rd-order polynomial (actually two of them - I
had to split the range to get a fit to 0.1%). Much nicer than playing with
the integer math stuff. I may order a PAC-II from Al, just to play around
with it, although using the FP package in the '877 is quite nice. But Al's
chip has a lot more functions.
Larry
Larry Bradley
Orleans (Ottawa), Ontario, CANADA
(although I'm using PicBasic Pro and a Pic 16F877). In particular, I just
"installed" a digital filter to filter the A/D for my amp-hour meter - boy,
does that ever work nice!
Now, as it turns out, I'm using a floating-point math package for most of
my calculations ( one could use the PAC-II from Al Williams if using a
Stamp). So I'm interested in more information on digital filtering - I'm
not restricted to using the Stamp's integer math. Can you point me to some
reference information?
Thanks
By the way, recall the thread I started on computing a power (x^1.237)? I
used floating point and a 3rd-order polynomial (actually two of them - I
had to split the range to get a fit to 0.1%). Much nicer than playing with
the integer math stuff. I may order a PAC-II from Al, just to play around
with it, although using the FP package in the '877 is quite nice. But Al's
chip has a lot more functions.
Larry
Larry Bradley
Orleans (Ottawa), Ontario, CANADA