From 8dbec761cf858ea65900c8a094599857208d8c3a Mon Sep 17 00:00:00 2001 From: "N.N." Date: Tue, 5 Jan 2010 22:49:36 +0000 Subject: svn path=/trunk/; revision=12907 --- .../doc/3.audio.examples/G04.control.blocksize.pd | 79 ---------------------- 1 file changed, 79 deletions(-) delete mode 100644 desiredata/doc/3.audio.examples/G04.control.blocksize.pd (limited to 'desiredata/doc/3.audio.examples/G04.control.blocksize.pd') diff --git a/desiredata/doc/3.audio.examples/G04.control.blocksize.pd b/desiredata/doc/3.audio.examples/G04.control.blocksize.pd deleted file mode 100644 index efae501a..00000000 --- a/desiredata/doc/3.audio.examples/G04.control.blocksize.pd +++ /dev/null @@ -1,79 +0,0 @@ -#N canvas 100 17 637 513 12; -#N canvas 195 311 647 354 delay-writer 0; -#X obj 86 220 inlet~; -#X obj 86 326 outlet~; -#X obj 392 197 block~ 1; -#X obj 164 267 *~ 0.99; -#X obj 87 272 +~; -#X obj 165 221 inlet; -#X text 80 7 Because of the feedback \, the delwrite~ has to be computed -after the delread~. So we set the blocksize to 1 to minimize the resulting -delay.; -#X text 390 219 this object sets the; -#X text 389 236 block size for audio; -#X text 388 255 computations in this; -#X obj 165 244 delread~ G04-del; -#X obj 98 302 delwrite~ G04-del 1000; -#X text 79 183 incoming; -#X text 81 198 pulses; -#X text 165 182 delay; -#X text 166 197 time; -#X text 388 273 window. Must be a; -#X text 388 292 power of two.; -#X text 77 60 The smaller the blocksize the more expensive the computations -are \, so don't reduce it lower than you have to. Also \, it's a good -idea to isolate the portion of the patch that requires the smaller -block size \, and only run that portion that way. Here \, the pulses -that excite the delay line are computed outside this window \, and -the output level control as well.; -#X connect 0 0 4 0; -#X connect 3 0 4 1; -#X connect 4 0 1 0; -#X connect 4 0 11 0; -#X connect 5 0 10 0; -#X connect 10 0 3 0; -#X restore 153 420 pd delay-writer; -#X obj 283 384 expr 1000/$f1; -#X obj 283 358 mtof; -#X msg 153 355 1; -#X msg 192 355 0; -#X obj 153 254 metro 500; -#X obj 283 304 random 60; -#X obj 153 228 loadbang; -#X obj 283 330 + 30; -#X text 86 9 CONTROLLING DELAY WITH BLOCK~; -#X text 299 420 <-- here is the delay loop; -#X text 63 43 In situations where a delay read feeds back to a delay -write \, the minimum possible delay you can achieve is one block \, -which by default is 64 samples \, or 1.45 msec at 44100 Hz. You can -shorten the minimum delay by changing the block size. Do this in a -subpatch (open it to see how).; -#X obj 153 449 output~; -#X obj 153 387 vline~; -#X text 371 487 updated for Pd version 0.37-1; -#X text 61 124 Here we use this principle to make a harpisichord-like -sound by sending pulses into a recirculating delay line (which imitates -the travel of the wave up and down the harpsichord string.) This is -related to Karplus-Strong synthesis \, but the idea is probably much -older than their paper.; -#X text 33 328 this makes; -#X text 32 346 a rectangular; -#X text 31 384 long.; -#X text 409 366 length of delay line is; -#X text 410 384 1000/(frequency); -#X obj 192 329 del 1; -#X text 32 364 pulse 1 msec; -#X connect 0 0 12 0; -#X connect 0 0 12 1; -#X connect 1 0 0 1; -#X connect 2 0 1 0; -#X connect 3 0 13 0; -#X connect 4 0 13 0; -#X connect 5 0 3 0; -#X connect 5 0 6 0; -#X connect 5 0 21 0; -#X connect 6 0 8 0; -#X connect 7 0 5 0; -#X connect 8 0 2 0; -#X connect 13 0 0 0; -#X connect 21 0 4 0; -- cgit v1.2.1