From f9e424312a63b740edb845d28685ec68022cf729 Mon Sep 17 00:00:00 2001
From: Ed Kelly <edkelly@users.sourceforge.net>
Date: Thu, 13 Dec 2007 07:06:52 +0000
Subject: Help files for windowing are complete! So now we have easy
 block-sized windows. Hurrah!  Ek

svn path=/trunk/externals/windowing/; revision=9094
---
 bartlett~-help.pd | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 bartlett~-help.pd

(limited to 'bartlett~-help.pd')

diff --git a/bartlett~-help.pd b/bartlett~-help.pd
new file mode 100644
index 0000000..0f2ebd0
--- /dev/null
+++ b/bartlett~-help.pd
@@ -0,0 +1,53 @@
+#N canvas 256 141 557 517 10;
+#X obj 4 479 cnv 15 550 20 empty \$0-pddp.cnv.footer empty 20 12 0
+14 -228856 -66577 0;
+#X obj 4 -17 cnv 15 550 40 empty \$0-pddp.cnv.header bartlett~ 3 12
+0 18 -204280 -1 0;
+#X obj 3 239 cnv 3 550 3 empty \$0-pddp.cnv.inlets inlets 15 12 0 13
+-228856 -1 0;
+#X obj 3 299 cnv 3 550 3 empty \$0-pddp.cnv.outlets outlet 15 12 0
+13 -228856 -1 0;
+#X obj 3 359 cnv 3 550 3 empty \$0-pddp.cnv.more_info more_info 15
+12 0 13 -228856 -1 0;
+#X obj 72 259 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
+-162280 0;
+#X text 168 40 formula:;
+#X obj 97 86 hsl 71 15 -1 1 0 0 empty empty empty -2 -6 0 10 -262144
+-1 -1 7000 1;
+#X msg 94 66 1;
+#X obj 94 46 loadbang;
+#X obj 102 365 pddp/pddplink http://en.wikipedia.org/wiki/Window_function
+-text wikipedia: window functions;
+#X obj 438 -14 import windowing;
+#X msg 36 154 \; pd dsp 1;
+#X text 21 85 height --->;
+#X obj 127 109 sig~ 1;
+#N canvas 0 0 450 300 graph3 0;
+#X array \$0-bartlett 64 float 0;
+#X coords 0 1 63 -1 200 140 1;
+#X restore 326 65 graph;
+#X text 102 394 Windowing functions are used with FFTs. These transform
+the signal block-by-block into a spectral representation whose resolution
+in both the frequency and time domains are proportional to their size
+(as a power-of-two in PD). The different windows have different characteristics
+in terms of stopband attenuation and noise bandwidth.;
+#X text 102 258 SIGNAL: the height (amplitude) of the window is controlled
+by the signal on its inlet.;
+#X obj 127 158 tabsend~ \$0-bartlett;
+#X obj 127 132 bartlett~;
+#X text 169 53 1-x^2;
+#X text 103 317 SIGNAL: a bartlett (triangle) window with size=dsp
+blocksize;
+#X obj 102 380 pddp/pddplink http://mathworld.wolfram.com/BartlettFunction.html
+-text mathworld link;
+#X obj 435 6 pddp/pddplink http://wiki.puredata.info/en/bartlett~ -text
+pdpedia: bartlett~;
+#X text 15 6 description: generates a bartlett window for each dsp
+block;
+#X obj 72 319 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856
+-162280 0;
+#X connect 7 0 14 0;
+#X connect 8 0 7 0;
+#X connect 9 0 8 0;
+#X connect 14 0 19 0;
+#X connect 19 0 18 0;
-- 
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