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Diffstat (limited to 'pd/doc/5.reference/rzero~-help.pd')
-rw-r--r-- | pd/doc/5.reference/rzero~-help.pd | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/pd/doc/5.reference/rzero~-help.pd b/pd/doc/5.reference/rzero~-help.pd new file mode 100644 index 00000000..c2200371 --- /dev/null +++ b/pd/doc/5.reference/rzero~-help.pd @@ -0,0 +1,79 @@ +#N canvas 56 7 526 510 12; +#X floatatom 104 172 0 0 0 0 - - -; +#X obj 54 85 osc~ 100; +#X msg 69 117 clear; +#X obj 77 483 lop~; +#X text 8 483 see also:; +#X text 331 482 updated for Pd version-0.38; +#X obj 84 430 rzero~; +#X obj 35 450 cpole~; +#X obj 35 430 rpole~; +#X obj 133 430 rzero_rev~; +#X obj 84 450 czero~; +#X obj 133 450 czero_rev~; +#X text 211 430 real; +#X text 210 451 complex; +#X text 32 414 1-pole; +#X text 81 414 1-zero; +#X text 131 414 1-zero \, reversed; +#X text 57 399 summary of raw filters:; +#X msg 71 143 set 1; +#X text 117 143 <-- set internal state; +#X text 118 86 <-- signal to filter; +#X text 128 173 <-- filter coefficient (may be a signal); +#X text 115 198 <-- creation argument initializes filter coefficient +; +#X text 113 116 <-- clear internal state to zero; +#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 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 obj 76 168 rzero~; +#X connect 0 0 5 0; +#X connect 1 0 0 0; +#X connect 2 0 3 0; +#X connect 4 0 5 1; +#X connect 5 0 14 0; +#X connect 6 0 14 0; +#X connect 7 0 8 0; +#X connect 8 0 14 1; +#X connect 10 0 12 0; +#X connect 11 0 9 0; +#X connect 11 0 9 1; +#X connect 12 0 11 1; +#X connect 14 0 2 0; +#X connect 14 0 11 0; +#X restore 457 416 pd test; +#X text 111 483 etc.: user-friendly filters; +#X obj 52 7 rzero~; +#X text 114 7 real one-zero (non-recursive) filter \, raw; +#X text 8 35 Rzero~ filters an audio signal (left inlet) via a one-zero +real filter \, whose coefficient is controlled by a creation argument +or by an audio signal (right inlet).; +#X obj 53 195 rzero~ 1; +#X text 8 270 where y[n] is the output \, x[n] the input \, and a[n] +the filter coefficient. The filter is always stable.; +#X text 10 302 The transfer function is H(Z) = 1 - aZ^-1.; +#X text 73 252 y[n] = x[n] - a[n] * x[n-1]; +#X text 8 320 (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 18 0 30 0; |