Help files for windowing are complete! So now we have easy block-sized

windows. Hurrah!  Ek

svn path=/trunk/externals/windowing/; revision=9094

1 files changed, 64 insertions, 0 deletions

diff --git a/gaussian~-help.pd b/gaussian~-help.pd
new file mode 100644
index 0000000..ac715ac
--- /dev/null
+++ b/gaussian~-help.pd
@@ -0,0 +1,64 @@
+#N canvas 256 141 559 517 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 gaussian~ 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 3 319 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-gaussian 64 float 0;
+#X coords 0 1 63 -1 200 140 1;
+#X restore 326 65 graph;
+#X text 103 405 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 text 15 6 description: generates a gaussian window for each dsp
+block;
+#X obj 435 6 pddp/pddplink http://wiki.puredata.info/en/gaussian~ -text
+pdpedia: gaussian~;
+#X obj 127 132 gaussian~;
+#X obj 127 158 tabsend~ \$0-gaussian;
+#X text 103 327 SIGNAL: a gaussian window with size=dsp blocksize;
+#X obj 197 86 hsl 71 15 0 2 0 0 empty empty empty -2 -6 0 10 -262144
+-1 -1 1750 1;
+#X floatatom 192 105 5 0 0 0 - - -;
+#X msg 121 66 0.5;
+#X text 102 284 FLOAT: the width of the gaussian distribution curve
+is controlled by floats in the inlet;
+#X text 169 54 2^(-(x/d)^2);
+#X obj 102 378 pddp/pddplink http://en.wikipedia.org/wiki/Gaussian_function
+-text wikipedia: gaussian function;
+#X obj 102 392 pddp/pddplink http://mathworld.wolfram.com/GaussianFunction.html
+-text mathworld link;
+#X obj 73 326 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 9 0 25 0;
+#X connect 14 0 20 0;
+#X connect 20 0 21 0;
+#X connect 23 0 24 0;
+#X connect 24 0 20 0;
+#X connect 25 0 23 0;