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author | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2008-02-08 13:00:32 +0000 |
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committer | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2008-02-08 13:00:32 +0000 |
commit | 4d84d14ac1aa13958eaa2971b03f7f929a519105 (patch) | |
tree | 6579d3f2cea5410a10c4baac8d0f372fb0dff372 /desiredata/doc/5.reference/rpole~-help.pd | |
parent | b334d38aefbd8e0e159d7af6c20d63c5d2b64859 (diff) |
reorganized
svn path=/trunk/; revision=9400
Diffstat (limited to 'desiredata/doc/5.reference/rpole~-help.pd')
-rw-r--r-- | desiredata/doc/5.reference/rpole~-help.pd | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/desiredata/doc/5.reference/rpole~-help.pd b/desiredata/doc/5.reference/rpole~-help.pd new file mode 100644 index 00000000..011a2b5d --- /dev/null +++ b/desiredata/doc/5.reference/rpole~-help.pd @@ -0,0 +1,79 @@ +#N canvas 56 7 669 542 12; +#X floatatom 118 172 0 0 0 0 - - -; +#X obj 54 85 osc~ 100; +#X msg 69 117 clear; +#X obj 96 512 lop~; +#X text 10 512 see also:; +#X obj 52 7 rpole~; +#X text 114 7 real one-pole (recursive) filter \, raw; +#X text 8 35 Rpole~ filters an audio signal (left inlet) via a one-pole +real filter \, whose coefficient is controlled by a creation argument +or by an audio signal (right inlet).; +#X text 413 511 updated for Pd version-0.38; +#X obj 95 441 rzero~; +#X obj 35 463 cpole~; +#X obj 35 441 rpole~; +#X obj 154 441 rzero_rev~; +#X obj 95 463 czero~; +#X obj 154 463 czero_rev~; +#X text 253 441 real; +#X text 252 464 complex; +#X text 32 425 1-pole; +#X text 92 425 1-zero; +#X text 142 425 1-zero \, reversed; +#X text 57 410 summary of raw filters:; +#X msg 71 143 set 1; +#X text 119 142 <-- set internal state; +#X text 132 86 <-- signal to filter; +#X text 150 173 <-- filter coefficient (may be a signal); +#X text 150 195 <-- creation argument initializes filter coefficient +; +#X text 73 252 y[n] = y[n-1] + a[n] * x[n]; +#X text 10 310 The transfer function is H(Z) = 1/(1 - aZ^-1).; +#X text 121 117 <-- clear internal state to zero; +#X text 11 272 where y[n] is the output \, x[n] the input \, and a[n] +the filter coefficient. The filter is unstable if/when |a[n]|>1.; +#X obj 53 195 rpole~ 0.9; +#X text 14 230 The action of rpole~ is:; +#N canvas 393 91 326 287 test 0; +#X obj 76 78 osc~; +#X floatatom 76 55 5 0 0 0 - - -; +#X obj 77 219 env~ 16384; +#X floatatom 77 243 5 0 0 0 - - -; +#X obj 76 168 rpole~; +#X obj 104 107 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 +1; +#X obj 76 105 *~; +#X msg 97 137 set 1; +#X floatatom 172 157 4 -100 100 0 - - -; +#X obj 172 182 / 100; +#X obj 214 256 dac~; +#X obj 228 177 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 +1; +#X obj 214 220 *~; +#X obj 230 197 / 10; +#X text 80 18 Stuff to test it:; +#X connect 0 0 6 0; +#X connect 1 0 0 0; +#X connect 2 0 3 0; +#X connect 4 0 2 0; +#X connect 4 0 12 0; +#X connect 5 0 6 1; +#X connect 6 0 4 0; +#X connect 7 0 4 0; +#X connect 8 0 9 0; +#X connect 9 0 4 1; +#X connect 11 0 13 0; +#X connect 12 0 10 0; +#X connect 12 0 10 1; +#X connect 13 0 12 1; +#X restore 457 427 pd test; +#X text 136 512 etc.: user-friendly filters; +#X text 8 331 (Pd also provides a suite of user-friendly filters. This +and other raw filters are provided for situations which the user-friendly +ones can't handle. See Chapter 8 of http://crca.ucsd.edu/~msp/techniques +for an introduction to the necessary theory.); +#X connect 0 0 30 1; +#X connect 1 0 30 0; +#X connect 2 0 30 0; +#X connect 21 0 30 0; |