From 7d6affca746f49f5ffb2818b8a9ccf9d91388e8f Mon Sep 17 00:00:00 2001
From: Jonathan Wilkes <jancsika1@users.sourceforge.net>
Date: Wed, 25 Aug 2010 00:31:27 +0000
Subject: revised help docs that conform to the PDDP template

svn path=/trunk/; revision=13942
---
 doc/pddp/biquad~-help.pd | 93 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 doc/pddp/biquad~-help.pd

(limited to 'doc/pddp/biquad~-help.pd')

diff --git a/doc/pddp/biquad~-help.pd b/doc/pddp/biquad~-help.pd
new file mode 100644
index 00000000..3c1035ad
--- /dev/null
+++ b/doc/pddp/biquad~-help.pd
@@ -0,0 +1,93 @@
+#N canvas 0 0 555 619 10;
+#X obj -1 595 cnv 15 552 21 empty \$0-pddp.cnv.footer empty 20 12 0
+14 -228856 -66577 0;
+#X obj -1 0 cnv 15 552 40 empty \$0-pddp.cnv.header biquad~ 3 12 0
+18 -204280 -1 0;
+#X obj -1 321 cnv 3 550 3 empty \$0-pddp.cnv.inlets inlets 8 12 0 13
+-228856 -1 0;
+#N canvas 46 244 494 344 META 0;
+#X text 12 105 PLATFORM windows macosx gnulinux;
+#X text 12 165 LIBRARY internal;
+#X text 12 205 WEBSITE http://crca.ucsd.edu/~msp/;
+#X text 12 65 LICENSE SIBSD;
+#X text 12 185 AUTHOR Miller Puckette;
+#X text 12 265 HELP_PATCH_AUTHORS Updated for Pd version-0.30. Jonathan
+Wilkes revised the patch to conform to the PDDP template for Pd version
+0.42.;
+#X text 12 5 GENRE help;
+#X text 12 45 KEYWORDS signal filters;
+#X text 12 85 DESCRIPTION 2-pole-2-zero-filter;
+#X text 12 145 OUTLET_0 signal;
+#X text 12 125 INLET_0 list signal set clear;
+#X text 12 25 NAME biquad~;
+#X text 12 225 RELEASE_DATE 2009;
+#X text 12 245 RELEASE_VERSION;
+#X restore 500 597 pd META;
+#X obj -1 416 cnv 3 550 3 empty \$0-pddp.cnv.outlets outlets 8 12 0
+13 -228856 -1 0;
+#X obj -1 453 cnv 3 550 3 empty \$0-pddp.cnv.argument arguments 8 12
+0 13 -228856 -1 0;
+#X obj -1 565 cnv 3 550 3 empty \$0-pddp.cnv.more_info more_info 8
+12 0 13 -228856 -1 0;
+#N canvas 46 487 428 102 Related_objects 0;
+#X obj 22 42 hip~;
+#X obj 62 41 lop~;
+#X obj 104 41 bp~;
+#X obj 139 41 vcf~;
+#X obj 1 1 cnv 15 425 20 empty \$0-pddp.cnv.subheading empty 3 12 0
+14 -204280 -1 0;
+#X text 7 1 [biquad~] Related Objects;
+#X restore 101 597 pd Related_objects;
+#X obj 78 330 cnv 17 3 75 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
+-162280 0;
+#X obj 471 3 biquad~;
+#X obj 445 20 pddp/pddplink http://wiki.puredata.info/en/biquad~ -text
+pdpedia: biquad~;
+#X obj 155 216 env~;
+#X floatatom 155 243 0 0 0 0 - - -;
+#X floatatom 66 98 0 0 0 0 - - -;
+#X obj 66 214 env~;
+#X floatatom 66 242 0 0 0 0 - - -;
+#X obj 155 183 biquad~ 1.41407 -0.9998 1 -1.41421 1;
+#X msg 155 99 1.41407 -0.9998 1 -1.41421 1;
+#X text 220 237 (= SR/8 = 5512.5 Hz @44.1k);
+#X text 167 77 list sets filter parameters;
+#X msg 190 129 set 0 0;
+#X msg 191 154 clear;
+#X obj 66 138 osc~ 5512.5;
+#X text 260 131 set internal state;
+#X text 258 153 ... or just clear it;
+#X text 98 350 list;
+#X text 98 330 signal;
+#X text 98 370 set;
+#X text 98 390 clear;
+#X obj 78 425 cnv 17 3 17 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
+-162280 0;
+#X text 98 426 signal;
+#X text 169 503 y(n) = ff1 * w(n) + ff2 * w(n-1) + ff3 * w(n-2);
+#X text 169 519 w(n) = x(n) + fb1 * w(n-1) + fb2 * w(n-2);
+#X text 169 541 Syntax: biquad~ fb1 fb2 ff1 ff2 ff3;
+#X text 59 267 Compare the value of the straight signal on the left
+with the value of the filtered signal on the right.;
+#X text 11 23 2-pole-2-zero-filter;
+#X text 169 472 - [biquad~] takes five floats as arguments which are
+used to calculate the following difference equation:;
+#X text 168 370 - set internal state.;
+#X text 168 390 - clear the internal state.;
+#X text 85 472 5 floats;
+#X text 214 218 this [biquad~] is a notch filter for fn = Pi/4;
+#X text 168 350 - a list of 5 floats is used to set filter parameters.
+;
+#X text 168 330 - the incoming signal;
+#X text 168 426 - the outgoing signal;
+#X obj 4 597 pddp/pddplink pddp/help.pd -text help;
+#X obj 455 51 pddp/dsp-reminder;
+#X connect 11 0 12 0;
+#X connect 13 0 22 0;
+#X connect 14 0 15 0;
+#X connect 16 0 11 0;
+#X connect 17 0 16 0;
+#X connect 20 0 16 0;
+#X connect 21 0 16 0;
+#X connect 22 0 14 0;
+#X connect 22 0 16 0;
-- 
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