From 57045df5fe3ec557e57dc7434ac1a07b5521bffc Mon Sep 17 00:00:00 2001 From: Guenter Geiger Date: Mon, 29 Jul 2002 17:06:19 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r58, which included commits to RCS files with non-trunk default branches. svn path=/trunk/; revision=59 --- pd/doc/4.fft.examples/03.denoise.pd | 364 ++++++++++++++++++++++++++++++++++++ 1 file changed, 364 insertions(+) create mode 100644 pd/doc/4.fft.examples/03.denoise.pd (limited to 'pd/doc/4.fft.examples/03.denoise.pd') diff --git a/pd/doc/4.fft.examples/03.denoise.pd b/pd/doc/4.fft.examples/03.denoise.pd new file mode 100644 index 00000000..09e1244e --- /dev/null +++ b/pd/doc/4.fft.examples/03.denoise.pd @@ -0,0 +1,364 @@ +#N canvas 54 36 882 556 12; +#X floatatom 306 344; +#X floatatom 68 337; +#N canvas 72 0 896 679 fft-analysis 0; +#X obj 140 447 *~; +#X obj 54 705 *~; +#X obj 139 612 *~; +#X floatatom 206 267; +#X obj 185 349 *~; +#X obj 356 188 + 1; +#X msg 447 257 0; +#X obj 173 181 *~; +#X obj 57 89 *~; +#X obj 95 641 *~; +#X obj 57 49 inlet~; +#X obj 54 642 *~; +#X obj 126 68 tabreceive~ hanning; +#X obj 57 136 rfft~; +#X obj 54 672 rifft~; +#X obj 55 743 outlet~; +#X text 132 50 Hanning window; +#X text 63 115 forward real FFT; +#X text 72 721 inverse real FFT; +#X graph graph1 0 0 1024 20 491 631 891 331; +#X array mask 1024 float; +#X pop; +#X obj 134 180 *~; +#X obj 134 209 +~; +#X msg 447 132 0; +#X obj 317 129 float; +#X obj 377 149 + 1; +#X obj 318 72 bang~; +#X obj 318 101 spigot; +#X obj 449 186 < 10; +#X floatatom 497 185; +#X obj 256 306 tabreceive~ mask; +#X obj 357 267 /; +#X msg 357 237 1; +#X obj 230 350 -~; +#X obj 370 331 sig~; +#X obj 447 232 sel 0; +#X obj 348 356 *~; +#X obj 331 387 +~; +#X obj 330 412 tabsend~ mask; +#X floatatom 448 287; +#X obj 316 156 t f f; +#X obj 446 56 r make-mask; +#X obj 206 296 sig~; +#X obj 206 241 r mask-level; +#X obj 140 414 /~; +#X obj 356 212 t b f; +#X obj 177 612 sig~ 0.001; +#X obj 29 781 block~ 1024 4; +#X obj 663 76 r window-size; +#X obj 447 84 t b f; +#X obj 676 137 t b f; +#X obj 663 171 /; +#X obj 661 194 * 250; +#X text 728 202 hop size in msec; +#X obj 497 107 /; +#X text 497 206 number of; +#X text 505 221 frames; +#X text 439 12 calculate a mask using N msec of; +#X text 438 30 background noise; +#X obj 176 415 sig~ 1e-20; +#X text 152 467 multiply the signal by the; +#X text 153 485 quantity s/(s+m) where "s"; +#X text 152 505 is signal power and "m" is mask.; +#X text 153 527 The multiplier is close to 1 if; +#X text 155 549 s>>m \, but close to 0 if s<