From ed932acb5860bf8b9296169676499562a55d139e Mon Sep 17 00:00:00 2001 From: Miller Puckette Date: Mon, 6 Sep 2004 20:20:36 +0000 Subject: checking in version 0.38test5. Oops, I realize I forgot some more nice files, will add them and re-commit. svn path=/trunk/; revision=2010 --- pd/doc/5.reference/czero~-help.pd | 124 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 pd/doc/5.reference/czero~-help.pd (limited to 'pd/doc/5.reference/czero~-help.pd') diff --git a/pd/doc/5.reference/czero~-help.pd b/pd/doc/5.reference/czero~-help.pd new file mode 100644 index 00000000..58dab9cc --- /dev/null +++ b/pd/doc/5.reference/czero~-help.pd @@ -0,0 +1,124 @@ +#N canvas 79 19 533 567 12; +#X obj 54 90 osc~ 100; +#X msg 62 117 clear; +#X obj 79 547 lop~; +#X text 10 550 see also:; +#X text 333 549 updated for Pd version-0.38; +#X obj 86 497 rzero~; +#X obj 37 517 cpole~; +#X obj 37 497 rpole~; +#X obj 135 497 rzero_rev~; +#X obj 86 517 czero~; +#X obj 135 517 czero_rev~; +#X text 213 497 real; +#X text 212 518 complex; +#X text 34 481 1-pole; +#X text 83 481 1-zero; +#X text 133 481 1-zero \, reversed; +#X text 59 466 summary of raw filters:; +#X text 106 116 <-- clear internal state to zero; +#N canvas 255 257 585 372 test 0; +#X obj 152 296 env~ 16384; +#X floatatom 152 320 5 0 0 0 - - -; +#X floatatom 484 121 4 -1000 1000 0 - - -; +#X obj 349 324 dac~; +#X obj 349 288 *~; +#X obj 375 115 cos~; +#X floatatom 301 60 5 0 0 0 - - -; +#X obj 329 112 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 +1; +#X obj 301 110 *~; +#X obj 301 83 phasor~; +#X floatatom 382 66 5 0 0 0 - - -; +#X obj 382 89 / 1000; +#X obj 408 116 -~ 0.25; +#X obj 408 138 cos~; +#X obj 484 140 / 1000; +#X obj 374 166 *~; +#X obj 408 166 *~; +#X obj 228 296 env~ 16384; +#X floatatom 228 320 5 0 0 0 - - -; +#X obj 381 284 dbtorms; +#X floatatom 382 264 5 0 0 0 - - -; +#X obj 245 220 czero~; +#X floatatom 201 132 4 -1000 1000 0 - - -; +#X obj 92 126 cos~; +#X obj 112 85 phasor~; +#X floatatom 115 60 5 0 0 0 - - -; +#X obj 125 127 -~ 0.25; +#X obj 125 149 cos~; +#X obj 201 151 / 1000; +#X obj 91 177 *~; +#X obj 125 177 *~; +#X text 214 27 Stuff to test it:; +#X connect 0 0 1 0; +#X connect 2 0 14 0; +#X connect 4 0 3 0; +#X connect 4 0 3 1; +#X connect 5 0 15 0; +#X connect 6 0 9 0; +#X connect 7 0 8 1; +#X connect 8 0 21 0; +#X connect 9 0 8 0; +#X connect 10 0 11 0; +#X connect 11 0 5 0; +#X connect 11 0 12 0; +#X connect 12 0 13 0; +#X connect 13 0 16 0; +#X connect 14 0 16 1; +#X connect 14 0 15 1; +#X connect 15 0 21 2; +#X connect 16 0 21 3; +#X connect 17 0 18 0; +#X connect 19 0 4 1; +#X connect 20 0 19 0; +#X connect 21 0 0 0; +#X connect 21 0 4 0; +#X connect 21 1 17 0; +#X connect 22 0 28 0; +#X connect 23 0 29 0; +#X connect 24 0 26 0; +#X connect 24 0 23 0; +#X connect 25 0 24 0; +#X connect 26 0 27 0; +#X connect 27 0 30 0; +#X connect 28 0 30 1; +#X connect 28 0 29 1; +#X connect 29 0 21 0; +#X connect 30 0 21 1; +#X restore 459 483 pd test; +#X text 113 550 etc.: user-friendly filters; +#X text 10 387 (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 text 118 91 <-- signal to filter (real part); +#X text 117 173 <-- signal to filter (imaginary part); +#X obj 84 172 sig~; +#X obj 115 197 sig~; +#X text 149 199 <-- filter coefficient (real part); +#X obj 145 219 sig~; +#X text 159 246 <-- creation arguments initialize filter; +#X text 187 262 coefficient (real and imaginary part); +#X text 150 144 <-- set internal state (real&imaginary parts); +#X msg 64 143 set 0.6 0.8; +#X obj 52 7 czero~; +#X text 112 7 complex one-zero (non-recursive) filter \, raw; +#X text 8 31 Czero~ filters a complex audio signal (first two inlets) +via a one-zero filter \, whose coefficients are controlled by creation +arguments or by another complex audio signal (remaining two inlets). +; +#X text 179 221 <-- filter coefficient (imaginary part); +#X text 14 279 The action of czero~ is:; +#X text 73 300 y[n] = x[n] - a[n] * x[n-1]; +#X text 11 320 where y[n] is the output \, x[n] the input \, and a[n] +the filter coefficient (all complex numbers). The filter is always +stable.; +#X text 12 369 The transfer function is H(Z) = 1 - aZ^-1.; +#X obj 53 244 czero~ 0.9 0.4; +#X connect 0 0 39 0; +#X connect 1 0 39 0; +#X connect 23 0 39 1; +#X connect 24 0 39 2; +#X connect 26 0 39 3; +#X connect 30 0 39 0; -- cgit v1.2.1