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 --- desiredata/doc/3.audio.examples/I05.compressor.pd | 237 ---------------------- 1 file changed, 237 deletions(-) delete mode 100644 desiredata/doc/3.audio.examples/I05.compressor.pd (limited to 'desiredata/doc/3.audio.examples/I05.compressor.pd') diff --git a/desiredata/doc/3.audio.examples/I05.compressor.pd b/desiredata/doc/3.audio.examples/I05.compressor.pd deleted file mode 100644 index 10fe3375..00000000 --- a/desiredata/doc/3.audio.examples/I05.compressor.pd +++ /dev/null @@ -1,237 +0,0 @@ -#N canvas 557 371 620 428 12; -#N canvas 297 254 646 523 fft-analysis 0; -#X obj 115 409 *~; -#X obj 75 409 *~; -#X obj 76 114 *~; -#X obj 77 88 inlet~; -#X obj 76 137 rfft~; -#X obj 75 466 *~; -#X obj 171 177 *~; -#X obj 75 432 rifft~; -#X obj 75 489 outlet~; -#X obj 137 177 *~; -#X obj 137 200 +~; -#X obj 461 85 block~ 1024 4; -#X obj 137 351 clip~; -#X obj 178 306 r squelch; -#X obj 110 114 tabreceive~ \$0-hann; -#X obj 177 329 expr 0.01*$f1*$f1; -#X obj 461 116 loadbang; -#X obj 137 381 *~ 0.00065; -#X obj 137 225 +~ 1e-20; -#X obj 136 262 q8_rsqrt~; -#X obj 109 466 tabreceive~ \$0-hann; -#X text 31 5 As in the previous patch \, this works by multiplying -each channel of the Fourier analysis by a real number computed from -the magnitude. If the magnutude is "m" \, the correction factor is -1/m \, but only to an upper limit controlled by the "squelch" parameter. -; -#X text 211 174 squared magnitude; -#X text 219 225 protect against divide-by-zero; -#X text 223 261 quick 8-bit-accurate reciprocal square root; -#X text 222 277 (done by table lookup - about 0.25% accurate); -#X text 193 351 limit the gain to squelch*squelch/100; -#X text 238 381 normalize for 1024-point \, overlap-4 Hann; -#X text 151 409 multiply gain by real and complex part; -#X text 152 429 of the amplitude; -#X text 130 137 outputs complex amplitudes; -#X msg 461 139 \; pd dsp 1 \; window-size 1024 \; squelch 10 \; squelch-set -set 10; -#X connect 0 0 7 1; -#X connect 1 0 7 0; -#X connect 2 0 4 0; -#X connect 3 0 2 0; -#X connect 4 0 9 0; -#X connect 4 0 9 1; -#X connect 4 0 1 0; -#X connect 4 1 6 0; -#X connect 4 1 6 1; -#X connect 4 1 0 0; -#X connect 5 0 8 0; -#X connect 6 0 10 1; -#X connect 7 0 5 0; -#X connect 9 0 10 0; -#X connect 10 0 18 0; -#X connect 12 0 17 0; -#X connect 13 0 15 0; -#X connect 14 0 2 1; -#X connect 15 0 12 2; -#X connect 16 0 31 0; -#X connect 17 0 0 1; -#X connect 17 0 1 1; -#X connect 18 0 19 0; -#X connect 19 0 12 0; -#X connect 20 0 5 1; -#X restore 42 330 pd fft-analysis; -#X floatatom 57 196 0 0 500 0 - squelch-set -; -#X obj 57 220 s squelch; -#N canvas 190 43 427 657 test-signal 0; -#X obj 90 444 line~; -#X obj 90 369 f; -#X obj 90 524 outlet~; -#X msg 90 423 0 \, \$1 \$2; -#X obj 90 397 pack 0 0; -#X obj 190 344 /; -#X obj 317 295 * 0.001; -#X obj 90 497 hip~ 5; -#X obj 35 246 loadbang; -#X msg 90 322 1; -#X obj 90 344 metro 1000; -#X obj 259 272 t b b f; -#X obj 117 270 t b f; -#X obj 90 469 tabread4~ \$0-sample; -#X text 21 28 test signal: looped sample playback; -#X obj 67 131 hip~ 5; -#X obj 67 107 adc~ 1; -#X obj 129 131 s insamprate; -#X obj 67 70 inlet; -#X obj 129 107 samplerate~; -#X obj 116 246 r \$0-samplength; -#X obj 259 246 r \$0-insamprate; -#X obj 67 154 tabwrite~ \$0-sample; -#X connect 0 0 13 0; -#X connect 1 0 4 0; -#X connect 3 0 0 0; -#X connect 4 0 3 0; -#X connect 5 0 4 1; -#X connect 5 0 10 1; -#X connect 6 0 5 1; -#X connect 7 0 2 0; -#X connect 8 0 9 0; -#X connect 9 0 10 0; -#X connect 10 0 1 0; -#X connect 11 0 9 0; -#X connect 11 1 5 0; -#X connect 11 2 6 0; -#X connect 12 0 9 0; -#X connect 12 1 5 0; -#X connect 12 1 1 1; -#X connect 13 0 7 0; -#X connect 15 0 22 0; -#X connect 16 0 15 0; -#X connect 18 0 19 0; -#X connect 18 0 16 0; -#X connect 19 0 17 0; -#X connect 20 0 12 0; -#X connect 21 0 11 0; -#X restore 43 303 pd test-signal; -#X obj 43 359 output~; -#N canvas 388 86 722 350 insample 0; -#N canvas 0 0 450 300 graph1 0; -#X array \$0-sample 155948 float 0; -#X coords 0 1 155947 -1 400 150 1; -#X restore 259 24 graph; -#X obj 19 23 r read-sample; -#X obj 19 74 unpack s f; -#X obj 19 184 soundfiler; -#X text 356 250 read a sample; -#X obj 276 249 loadbang; -#X obj 19 100 t s b; -#X obj 75 99 symbol \$0-sample; -#X obj 19 135 pack s s; -#X msg 19 160 read -resize \$1 \$2; -#X obj 74 46 44100; -#X obj 19 47 t a b; -#X msg 276 273 \; read-sample ../sound/bell.aiff; -#X obj 29 208 s \$0-samplength; -#X obj 116 74 s \$0-insamprate; -#X obj 19 247 /; -#X obj 19 271 * 1000; -#X obj 19 294 s \$0-samp-msec; -#X obj 57 247 r \$0-insamprate; -#X connect 1 0 11 0; -#X connect 2 0 6 0; -#X connect 2 1 14 0; -#X connect 3 0 13 0; -#X connect 3 0 15 0; -#X connect 5 0 12 0; -#X connect 6 0 8 0; -#X connect 6 1 7 0; -#X connect 7 0 8 1; -#X connect 8 0 9 0; -#X connect 9 0 3 0; -#X connect 10 0 14 0; -#X connect 11 0 2 0; -#X connect 11 1 10 0; -#X connect 15 0 16 0; -#X connect 16 0 17 0; -#X connect 18 0 15 1; -#X restore 223 313 pd insample; -#X text 362 406 updated for Pd version 0.39; -#X text 56 43 Here we divide each complex channel in the Fourier analysis -by its own magnitude to "flatten" the spectrum. The "squelch" control -limits the amplitude boost the algorithm will apply. If infinite \, -you'll get a white spectrum. If less \, the louder parts of the spectrum -will be flattened but the quieter ones will only be boosted by the -squelch value.; -#X text 73 6 DYNAMIC RANGE COMPRESSION BY FOURIER ANALYSIS CHANNEL -; -#X floatatom 223 366 5 0 0 0 - #0-samp-msec -; -#X obj 43 282 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X text 62 281 <- record; -#X text 276 365 sample length \, msec; -#X msg 292 183 ../sound/bell.aiff; -#X msg 292 208 ../sound/voice.wav; -#X msg 292 233 ../sound/voice2.wav; -#X text 91 197 <- squelch; -#X text 295 161 change input sound; -#X obj 292 259 s read-sample; -#N canvas 0 110 565 454 hann-window 0; -#N canvas 0 0 450 300 graph1 0; -#X array \$0-hann 1024 float 0; -#X coords 0 1 1023 0 300 100 1; -#X restore 82 311 graph; -#X obj 378 165 osc~; -#X obj 378 190 *~ -0.5; -#X obj 378 214 +~ 0.5; -#X obj 331 247 tabwrite~ \$0-hann; -#X obj 37 88 r window-size; -#X obj 38 173 /; -#X obj 127 142 samplerate~; -#X obj 38 251 s window-sec; -#X obj 177 204 swap; -#X obj 177 228 /; -#X obj 177 252 s window-hz; -#X obj 49 201 * 1000; -#X obj 49 228 s window-msec; -#X obj 38 115 t f b f; -#X msg 173 92 resize \$1; -#X obj 173 116 s \$0-hann; -#X obj 330 105 r window-hz; -#X msg 382 130 0; -#X obj 330 131 t f b; -#X text 15 8 calculate Hann window table (variable window size) and -constants window-hz (fundamental frequency of analysis) \, window-sec -and window-msec (analysis window size in seconds and msec).; -#X connect 1 0 2 0; -#X connect 2 0 3 0; -#X connect 3 0 4 0; -#X connect 5 0 14 0; -#X connect 6 0 8 0; -#X connect 6 0 12 0; -#X connect 7 0 6 1; -#X connect 7 0 9 1; -#X connect 9 0 10 0; -#X connect 9 1 10 1; -#X connect 10 0 11 0; -#X connect 12 0 13 0; -#X connect 14 0 6 0; -#X connect 14 0 9 0; -#X connect 14 1 7 0; -#X connect 14 2 15 0; -#X connect 15 0 16 0; -#X connect 17 0 19 0; -#X connect 18 0 1 1; -#X connect 19 0 1 0; -#X connect 19 1 4 0; -#X connect 19 1 18 0; -#X restore 223 335 pd hann-window; -#X connect 0 0 4 0; -#X connect 0 0 4 1; -#X connect 1 0 2 0; -#X connect 3 0 0 0; -#X connect 10 0 3 0; -#X connect 13 0 18 0; -#X connect 14 0 18 0; -#X connect 15 0 18 0; -- cgit v1.2.1