4-pole IIR Filter - Fixed point math - spin

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A 4-element infinite impulse response (IIR) digital filter with recursion, implemented in spin. This filter is best suited for low-to-moderate bandwidth filtering applications (e.g. filtering accelerometer or Ping))) data). Uses fixed point integer math. Also includes various supporting filter synthesis functions.

See also:

http://forums.parallax.com/showthread.php?t=118111


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