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-#X obj 19 349 +~ 1e-15;
-#X obj 19 598 *~;
-#X obj 52 598 tabreceive~ \$0-hann;
-#X obj 127 643 expr 2/(3*$f1);
-#X obj 591 563 loadbang;
-#X msg 591 589 \; pd dsp 1 \; window-size 2048 \; transpo 0 \; rewind
-bang;
-#X msg 426 619 set \$1 4;
-#X obj 97 425 q8_rsqrt~;
-#N canvas 139 105 1006 799 read-windows 0;
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-#X msg 17 523 \$1 \, \$2 \$3;
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-#X text 43 6 Read two windows out of the recorded sample \, one 1/4
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-;
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-#X text 91 587 "back" window 1/4 cycle behind "front" one;
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-#X obj 845 684 r auto;
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-#X msg 730 707 \; detune 0;
-#X text 326 275 loop to precess the location according;
-#X text 325 291 to the "speed" parameter.;
-#X text 611 31 if location changes \, update number box;
-#X text 610 50 in main window via "location-set" \, but;
-#X text 613 69 taking care to limit frequency of updates.;
-#X text 756 462 reflect control changes;
-#X text 756 479 in main window.;
-#X text 754 344 setting location by hand;
-#X text 752 362 sets speed to zero.;
-#X text 760 653 misc controls;
-#X text 496 527 "rewind" control takes us;
-#X text 499 545 to a location depending on;
-#X text 499 564 stretched window size.;
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-#X text 272 5 recall previous output amplitude. Its phase will be added
-to the phase difference we measure from two windows in the the recorded
-sound.;
-#X obj 121 69 *~;
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-#X text 247 66 divide by the magnitude to make a unit-magnitude complex
-amplitude (phase only). The 1e-20 is to prevent overflows. q8_rsqrt~
-is reciprocal square root.;
-#X text 247 165 Take FT of the window in back. Multiply its conjugate
-by the normalized previous output. The result has the magnitude of
-the input sound and phase (previous output phase) minus (back window
-phase).;
-#X text 249 370 Normalize again \, this time taking care to salt each
-channel with 1e-15 so that we get a unit complex number even if everything
-was zero heretofore.;
-#X text 288 427 Now take the FT of the forward window and multiply
-it by the unit complex number from above. The magnitude will be that
-of the forward window and the phase will be the previous output phase
-plus the phase difference between the two analysis windows -- except
-that if "lock" is on \, they will be modified to agree progressively
-better with the inter-channel phase relationships of the input.;
-#X text 249 242 If "lock" is on \, encourage neighboring channels to
-stay in phase by adding the two neighboring complex amplitudes. The
-result will tend toward the channel with the strongest amplitude. If
-the phase relationships between channels in the output and those in
-the input are in parallel \, then neighboring channels of the quotient
-will all have the same phase and this will not change any phases. (lrshift
-shifts the signal to the left or right depending on its argument.)
-;
-#X text 387 560 'set' message to block;
-#X text 390 577 allows variable size;
-#X text 259 126 Read two windows \, one 1/4 length behind the other
-\, of the input sound \, with Hann window function (see inside).;
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-#X text 164 364 hundredths;
-#X text 493 294 in cents;
-#X text 389 359 normal;
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-#X obj 38 173 /;
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-#X obj 38 251 s window-sec;
-#X obj 177 204 swap;
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-#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).;
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-#X text 460 438 <- record;
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--1;
-#X obj 262 408 s rewind;
-#X msg 345 336 200;
-#X msg 345 358 100;
-#X msg 345 380 20;
-#X text 386 335 contract;
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-#X text 494 277 detune;
-#X text 55 330 location;
-#X text 52 346 (stops;
-#X text 57 361 motion);
-#X text 165 348 motion in;
-#X text 232 464 read input sound;
-#X text 103 7 PHASE VOCODER FOR TIME STETCHING AND CONTRACTION;
-#X text 604 479 length \, msec;
-#X floatatom 607 419 5 0 0 0 - window-size -;
-#X msg 607 307 512;
-#X msg 607 329 1024;
-#X msg 607 351 2048;
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-#X text 607 274 window size \,;
-#X text 607 289 samples;
-#X text 648 306 <- set;
-#X text 100 306 ------- location controls -------;
-#X text 660 419 (check);
-#X obj 345 407 s auto;
-#X text 23 35 This patch takes a sound \, analyzes windows in it both
-for channel magnitude and for phase precession in each channel (compared
-to another operlapping window). The real-time output recreates the
-same magnitudes and phase precession \, althought the phases themselves
-are in general different. You can control either the location or its
-motion (setting location stops motion \, while setting a non-zero motion
-causes the location to change automatically). "Rewind" goes back to
-the beginning. You can use different window sizes (use the message
-boxes - the number box is for readout). The "lock" feature forces phase
-coherency between neighboring channels \, which makes a more present
-sound but can add artifacts to the sound. Look in "pd fft-analysis"
-to see the workings.;
-#X text 483 568 updated for Pd version 0.39;
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-#X text 466 458 file ->;
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