#N canvas 1 53 559 514 10; #X declare -lib windowing; #X obj 4 477 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 hamming~ 3 12 0 18 -204280 -1 0; #X obj 3 229 cnv 3 550 3 empty \$0-pddp.cnv.inlets inlets 8 12 0 13 -228856 -1 0; #X obj 3 289 cnv 3 550 3 empty \$0-pddp.cnv.outlets outlet 8 12 0 13 -228856 -1 0; #X obj 3 349 cnv 3 550 3 empty \$0-pddp.cnv.more_info more_info 8 12 0 13 -228856 -1 0; #X obj 72 249 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856 -162280 0; #X text 168 40 formula:; #X floatatom 170 104 5 0 0 0 - - -; #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 102 354 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 text 15 6 description: generates a hamming window for each dsp block ; #X obj 435 6 pddp/pddplink http://wiki.puredata.info/en/hamming~ -text pdpedia: hamming~; #X obj 170 122 sig~ 1; #X obj 170 146 hamming~; #N canvas 0 0 450 300 (subpatch) 0; #X array \$0-hamming 64 float 0; #X coords 0 1 63 -1 200 140 1; #X restore 334 60 graph; #X text 167 53 0.54+0.46*(cos(pi*x)); #X obj 102 367 pddp/pddplink http://en.wikipedia.org/wiki/Hamming -text wikipedia: Richard Hamming; #X obj 102 380 pddp/pddplink http://mathworld.wolfram.com/HammingFunction.html -text mathworld link; #X text 102 392 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 103 307 SIGNAL: a hamming (raised cosine) window with size=dsp blocksize; #X obj 170 171 tabsend~ \$0-hamming; #X obj 72 309 cnv 17 3 30 empty \$0-pddp.cnv.let.0 0 5 9 0 16 -228856 -162280 0; #X text 102 248 SIGNAL: the height (amplitude) of the window is controlled by the signal on its inlet.; #N canvas 288 199 494 344 META 0; #X text 12 125 HELP_PATCH_AUTHORS "pd meta" information added by Jonathan Wilkes for Pd version 0.42.; #X text 12 25 LICENSE GPL v2; #X text 12 5 KEYWORDS signal; #X text 12 65 INLET_0 signal; #X text 12 85 OUTLET_0 signal; #X text 12 105 AUTHOR Joe Sarlo; #X text 12 45 DESCRIPTION generate a hamming window for each dsp block ; #X restore 505 477 pd META; #X connect 7 0 17 0; #X connect 8 0 7 0; #X connect 9 0 8 0; #X connect 10 0 9 0; #X connect 17 0 18 0; #X connect 18 0 25 0;