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Apply a digital filter (direct form II transposed): Difference between revisions
Apply a digital filter (direct form II transposed) (view source)
Revision as of 02:08, 16 April 2020
, 4 years ago→{{header|REXX}}: moved a statement.
m (→{{header|REXX}}: moved a statement.) |
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Line 991:
{{trans|Julia}}
<lang REXX>/*REXX pgm filters a signal with a order3 lowpass Butterworth, direct form II transposed*/
@a= '1 -2.77555756e-16 3.33333333e-1 -1.85037171e-17' /*filter coefficients*/
@b= 0.16666667 0.5 0.5 0.16666667 /* " " */
Line 998 ⟶ 997:
' 0.741527555207 0.277841675195 0.400833448236 -0.2085993586 -0.172842103641' ,
'-0.134316096293 0.0259303398477 0.490105989562 0.549391221511 0.9047198589 '
$.=0; N=
do i=1 for N;
do j=1 for words(@b); if i-j >= 0 then #= # + word(@b, j) * word(@s, i-j+1); end
do k=1 for words(@a); _= i -k +1; if i-k >= 0 then #= # - word(@a, k) * $._; end
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