From cee98b59f1adf987b6dcbc771299bb9d6d75b843 Mon Sep 17 00:00:00 2001 From: Guenter Geiger Date: Thu, 8 Aug 2002 16:42:32 +0000 Subject: added missing tildes svn path=/trunk/; revision=81 --- pd/extra/expr~/help-expr.pd | 231 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 231 insertions(+) create mode 100644 pd/extra/expr~/help-expr.pd (limited to 'pd/extra/expr~/help-expr.pd') diff --git a/pd/extra/expr~/help-expr.pd b/pd/extra/expr~/help-expr.pd new file mode 100644 index 00000000..98ca696f --- /dev/null +++ b/pd/extra/expr~/help-expr.pd @@ -0,0 +1,231 @@ +#N canvas 0 0 1024 745 10; +#X obj 75 416 expr 1; +#X floatatom 239 384 0 0 0; +#X floatatom 75 446 0 0 0; +#X msg 75 388 bang; +#X obj 143 414 expr 2 + 3; +#X msg 143 387 bang; +#X floatatom 143 442 0 0 0; +#X floatatom 238 442 0 0 0; +#X obj 238 414 expr 2+$f1; +#X floatatom 76 485 0 0 0; +#X floatatom 76 542 0 0 0; +#X obj 76 514 expr $f1 * $f2; +#X floatatom 155 485 0 0 0; +#N canvas 0 0 450 300 graph1 0; +#X coords 0 10 10 0 200 150 1; +#X array array1 10 float 0; +#X restore 472 362 graph; +#X floatatom 77 580 0 0 0; +#X floatatom 77 636 0 0 0; +#X floatatom 236 484 0 0 0; +#X floatatom 236 541 0 0 0; +#X obj 236 513 expr $s2[$f1]; +#X msg 309 485 symbol array1; +#X obj 77 608 expr sin(2 * 3.14159 * $f1 / 360); +#X msg 429 554 \; array1 1 4 2 8 5 6 1 4 2 8 5 6; +#X text 81 345 expr examples:; +#X text 66 10 expression evaluation family - expr \, expr~ \, fexpr~ +; +#X text 66 188 Syntyax:; +#X text 67 260 $f#: float input variable; +#X text 68 275 $s#: symbol input variable; +#X text -37 708 expr~ examples:; +#X obj 30 911 print~; +#X msg 67 890 bang; +#X obj 30 832 sig~ 440; +#X floatatom 103 849 0 0 0; +#X floatatom 30 809 0 0 0; +#X obj 30 872 expr~ $v1*$f2; +#X obj 139 912 print~; +#X msg 155 891 bang; +#X floatatom 139 824 0 0 0; +#X floatatom 212 826 0 0 0; +#X floatatom 411 847 0 0 0; +#X floatatom 298 823 0 0 0; +#X obj 298 850 osc~; +#X msg 526 670 \; pd dsp 0; +#X msg 448 672 \; pd dsp 1; +#X text 451 649 audio on; +#X text 534 648 audio off; +#X text 274 314 comment; +#X text 9 792 vector times scalar; +#X text 141 792 vector; +#X obj 297 910 dac~; +#X text 295 801 frequency; +#X text 427 829 amplitude; +#X text 497 116 Used for expr~ only:; +#X text 499 139 $v#: signal (vector) input (vector by vector evaluation) +; +#X text 494 172 Used for fexpr~ only:; +#X text 495 242 $y[n]: the output value indexed by n where n has to +satisfy 0 > n >= -vector size.; +#X text 489 282 (the vector size can be changed by the "block~" object.) +; +#X text 493 191 $x#[n]: the sample from inlet # indexed by n where +n has to satisfy 0 => n >= -vector size \, ($x# is a shorthand for +$x#[0] \, specifying the current sample); +#X floatatom 81 1300 0 0 0; +#X floatatom 214 1319 0 0 0; +#X msg 181 1279 -10; +#X text 8 1099 fexpr~ examples:; +#X obj 80 1567 print~; +#X msg 88 1547 bang; +#X floatatom 80 1471 0 0 0; +#X obj 80 1500 sig~ 1; +#X obj 81 1343 fexpr~ ($x1[$f2]+$x1)/2; +#X obj 80 1528 fexpr~ $x1+$y[-1]; +#X floatatom 590 1362 0 0 0; +#X floatatom 750 1383 0 0 0; +#X obj 585 1452 dac~; +#X obj 587 1403 fexpr~ ($x1[$f2/1000]+$x1)/2; +#X msg 819 1313 0 10000; +#X obj 750 1364 line 0; +#X msg 753 1314 -10000; +#X obj 75 1385 dac~; +#X text 51 1223 Simple FIR filter; +#X text 512 1130 Simple FIR filter using fractional offset; +#X msg 659 1314 -10000 10000; +#X obj 590 1383 osc~ 2205; +#X msg 599 1339 1102.5; +#X msg 817 1338 0 10000; +#X msg 751 1339 -20000; +#X msg 657 1339 -20000 10000; +#X msg 590 1314 2205; +#X text 88 1611 end; +#X msg 503 1308 start; +#X msg 505 1330 stop; +#X msg 12 1280 start; +#X msg 11 1305 stop; +#X msg 30 1465 start; +#X msg 29 1490 stop; +#X obj 446 1331 loadbang; +#X obj -27 1491 loadbang; +#X obj -44 1305 loadbang; +#X text 572 1287 frequency; +#X text 662 1296 of the simple filter; +#X msg 248 1278 -20; +#X obj 81 1321 osc~ 2205; +#X msg 111 1277 1102.5; +#X msg 65 1277 2205; +#X msg 215 1278 0; +#X text 78 1441 simple accumulator defined as and an IIR filter; +#X obj 139 871 expr~ $v1*$v2; +#X text 7 1144 NOTE: fexpr~ could use lots of CPU power \, by default +fexpr~ is on when it is loaded. In this page we are turning them off +with loadbang \, so to hear them you have to turn them on explicitly. +You can use the "start" and "stop" messages to start and stop fexpr~ +and expr~; +#X text 65 101 expr~ is used for expression evaluaion of signal data +on the vector by vector basis; +#X text 66 85 expr is used for expression evaluaion of control data +; +#X text 661 1284 index defining the frequency; +#X text 50 1236 -10 offset will fully filter audio frequency of 2205 +\, and -20 offset will filter audio at frequency of 1102.5; +#X text 514 1211 Thus \, the offset -10000 will filter audio at frequency +of 2205 and the offset value -20000 will filter the audio at frequency +of 1102.5.; +#X text 513 1157 When fractional offset is used \, fexpr~ determines +indexed by linear interpolation. In the following example the offset +value is divided by 1000 \, thus we can continuously change the offset +without an audible click in the output.; +#X text 243 1314 If you change this value you; +#X text 245 1326 hear a click; +#X text 77 670 make sure you turn on audio for the expr~ and fexpr~ +examples; +#X text 64 38 For a more detailed documentaion refer to http://www.crca.ucsd.edu/~yadegari/expr.html +; +#X text 67 203 The syntax is very close to how expressions are written +in C. Variables are specified as follows where the '#' stands for the +inlet number:; +#X text 68 246 $i#: integer input variable; +#X text 67 138 fexpr~ is used for expression evaluaion on sample level +data \; i.e. \, filter design. Warning: fexpr~ is very cpu intensive. +; +#X floatatom 792 826 5 0 0; +#X obj 545 875 tabsend~ a1; +#N canvas 0 0 450 300 graph4 0; +#X coords 0 1 63 -1 200 140 1; +#X array a1 64 float 0; +#X restore 546 897 graph; +#X obj 545 852 expr~ max(min($v1 \, $f2/10) \, -$f2/10); +#X obj 545 828 osc~ 4000; +#X text 13 730 NOTES: the first inlet of expr~ cannot be a $f1 or $i1 +\, this may change in later releases; +#X text 535 775 A simple limiter example; +#X text 718 800 Move the value below between 0 and 10 to change the +limiter threshold; +#X obj 410 714 vsl 15 128 0 127 0 0 empty empty empty 20 8 0 8 -262144 +-1 -1 0 1; +#X obj 297 871 expr~ $v1*$f2/128; +#X text 641 12 updated for Pd 0.35-35 test 8 and expr* 0.3; +#X connect 0 0 2 0; +#X connect 1 0 8 0; +#X connect 3 0 0 0; +#X connect 4 0 6 0; +#X connect 5 0 4 0; +#X connect 8 0 7 0; +#X connect 9 0 11 0; +#X connect 11 0 10 0; +#X connect 12 0 11 1; +#X connect 14 0 20 0; +#X connect 16 0 18 0; +#X connect 18 0 17 0; +#X connect 19 0 18 1; +#X connect 20 0 15 0; +#X connect 29 0 28 0; +#X connect 30 0 33 0; +#X connect 31 0 33 1; +#X connect 32 0 30 0; +#X connect 33 0 28 0; +#X connect 35 0 34 0; +#X connect 36 0 102 0; +#X connect 37 0 102 1; +#X connect 38 0 126 1; +#X connect 39 0 40 0; +#X connect 40 0 126 0; +#X connect 57 0 97 0; +#X connect 58 0 65 1; +#X connect 59 0 58 0; +#X connect 62 0 61 0; +#X connect 63 0 64 0; +#X connect 64 0 66 0; +#X connect 65 0 74 0; +#X connect 65 0 74 1; +#X connect 66 0 61 0; +#X connect 67 0 78 0; +#X connect 68 0 70 1; +#X connect 70 0 69 0; +#X connect 70 0 69 1; +#X connect 71 0 72 0; +#X connect 72 0 68 0; +#X connect 73 0 72 0; +#X connect 77 0 72 0; +#X connect 78 0 70 0; +#X connect 79 0 67 0; +#X connect 80 0 72 0; +#X connect 81 0 72 0; +#X connect 82 0 72 0; +#X connect 83 0 67 0; +#X connect 85 0 70 0; +#X connect 86 0 70 0; +#X connect 87 0 65 0; +#X connect 88 0 65 0; +#X connect 89 0 66 0; +#X connect 90 0 66 0; +#X connect 91 0 86 0; +#X connect 92 0 90 0; +#X connect 93 0 88 0; +#X connect 96 0 58 0; +#X connect 97 0 65 0; +#X connect 98 0 57 0; +#X connect 99 0 57 0; +#X connect 100 0 58 0; +#X connect 102 0 34 0; +#X connect 117 0 120 1; +#X connect 120 0 118 0; +#X connect 121 0 120 0; +#X connect 125 0 38 0; +#X connect 126 0 48 0; +#X connect 126 0 48 1; -- cgit v1.2.1