From 4fd362a04c61f1a8e97c9742372469513ec11ce2 Mon Sep 17 00:00:00 2001
From: Georg Holzmann <grholzi@users.sourceforge.net>
Date: Fri, 5 Jan 2007 16:39:41 +0000
Subject: anging to new helpfile format

svn path=/trunk/externals/grh/; revision=7215
---
 adaptive/doc/lms2~-help.pd  | 232 ++++++++++++++++++++++++++++++++++++++++++
 adaptive/doc/lms~-help.pd   | 179 +++++++++++++++++++++++++++++++++
 adaptive/doc/nlms2~-help.pd | 238 ++++++++++++++++++++++++++++++++++++++++++++
 adaptive/doc/nlms~-help.pd  | 186 ++++++++++++++++++++++++++++++++++
 4 files changed, 835 insertions(+)
 create mode 100755 adaptive/doc/lms2~-help.pd
 create mode 100755 adaptive/doc/lms~-help.pd
 create mode 100755 adaptive/doc/nlms2~-help.pd
 create mode 100755 adaptive/doc/nlms~-help.pd

diff --git a/adaptive/doc/lms2~-help.pd b/adaptive/doc/lms2~-help.pd
new file mode 100755
index 0000000..6910a02
--- /dev/null
+++ b/adaptive/doc/lms2~-help.pd
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+#X text 89 219 input signal x[n];
+#X text 176 259 reference signal d[n];
+#X text 176 274 (desired signal);
+#X text 108 461 output signal y[n];
+#X text 35 166 init arg1: nr. of coefficients;
+#X text 35 179 init arg2: stepsize parameter mu;
+#X text 198 641 (c) Georg Holzmann <grh@mur.at> \, 2005;
+#X text 39 520 some more info:;
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+#X text 35 135 x[n] ... input signal of the system;
+#X text 35 120 c[n] ... coefficient vector of the system;
+#X text 35 104 y[n] ... output signal of the system;
+#X text 43 369 d[n] ... desired signal \, reference signal;
+#X text 50 74 -> y[n] = c0[n]*x[n] + c1[n]*x[n-1] + c2[n]*x[n-2] +
+...;
+#X text 32 195 The LMS Adaptation Algorithm:;
+#X text 70 226 c[n] = c[n-1] + mu*e[n]*x[n];
+#X text 43 309 mu ... step-size parameter (learning rate);
+#X text 42 279 c[n] ... new coefficient vector;
+#X text 42 294 c[n-1] ... old coefficient vector;
+#X text 42 325 e[n] ... error sample at time n \, LMS tries to minimize
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+#X text 43 353 x[n] ... tap-input vector at time n;
+#X text 71 241 with e[n] = d[n] - y[n];
+#X text 33 33 An adaptive system is simply a FIR filter with the coefficients
+c[n] \, which can be learned.;
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+#X text 38 517 -> abs(x[n])^2 is the tap-input energy;
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new file mode 100755
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+#X text 50 74 -> y[n] = c0[n]*x[n] + c1[n]*x[n-1] + c2[n]*x[n-2] +
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+#X text 32 195 The LMS Adaptation Algorithm:;
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+#X text 43 309 mu ... step-size parameter (learning rate);
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+#X text 35 135 x[n] ... input signal of the system;
+#X text 35 120 c[n] ... coefficient vector of the system;
+#X text 35 104 y[n] ... output signal of the system;
+#X text 35 398 d[n] ... desired signal \, reference signal;
+#X text 50 74 -> y[n] = c0[n]*x[n] + c1[n]*x[n-1] + c2[n]*x[n-2] +
+...;
+#X text 35 312 mu ... step-size parameter (learning rate);
+#X text 34 282 c[n] ... new coefficient vector;
+#X text 34 297 c[n-1] ... old coefficient vector;
+#X text 34 354 e[n] ... error sample at time n \, LMS tries to minimize
+this error;
+#X text 35 382 x[n] ... tap-input vector at time n;
+#X text 71 241 with e[n] = d[n] - y[n];
+#X text 33 33 An adaptive system is simply a FIR filter with the coefficients
+c[n] \, which can be learned.;
+#X text 36 440 How to choose mu ?;
+#X text 36 463 Sufficient (deterministic) stability condition:;
+#X text 32 195 The normalized LMS Adaptation Algorithm:;
+#X text 70 226 c[n] = c[n-1] + mu/(alpha+abs(x[n])^2) *e[n]*x[n];
+#X text 34 327 alpha ... a small positive constant \, only to avoid
+division by zero;
+#X text 152 490 0 < mu < 2;
+#X restore 38 561 pd NLMS_EXPLANATION;
+#X msg 387 352 getmu;
+#X msg 387 331 mu \$1;
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+#X msg 387 460 getN;
+#X msg 387 549 help;
+#X msg 387 209 clear;
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+#X msg 387 496 write demo.dat;
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+#X text 490 151 turn adaptation on/off;
+#X text 435 203 clear current coefficients;
+#X text 435 216 and set them back to 0;
+#X text 436 275 print current coefficients;
+#X text 438 335 set/get stepsize parameter;
+#X text 439 349 mu (learning rate);
+#X text 428 460 get Nr. of coefficients;
+#X text 498 513 and mu to file;
+#X text 498 499 write/read coefficients;
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+#X msg 387 422 getalpha;
+#X text 456 403 set/get alpha (normally;
+#X text 457 417 you don't need that);
+#X msg 387 246 init_unity;
+#X text 467 233 set first coefficient to 1 \,;
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diff --git a/adaptive/doc/nlms~-help.pd b/adaptive/doc/nlms~-help.pd
new file mode 100755
index 0000000..d58ef68
--- /dev/null
+++ b/adaptive/doc/nlms~-help.pd
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+#X obj 22 42 inlet~;
+#X text 62 42 ~signal_in~;
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+#X text 89 260 input signal x[n];
+#X text 177 287 reference signal d[n];
+#X text 177 302 (desired signal);
+#X text 108 385 output signal y[n];
+#X text 35 172 init arg1: nr. of coefficients;
+#X text 498 141 turn adaptation on/off;
+#X text 443 193 clear current coefficients;
+#X text 443 206 and set them back to 0;
+#X text 444 265 print current coefficients;
+#X text 35 185 init arg2: stepsize parameter mu;
+#X text 446 325 set/get stepsize parameter;
+#X text 447 339 mu (learning rate);
+#X text 436 450 get Nr. of coefficients;
+#X text 506 503 and mu to file;
+#X text 506 489 write/read coefficients;
+#X text 206 622 (c) Georg Holzmann <grh@mur.at> \, 2005;
+#X text 36 481 some more info:;
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+#X text 350 38 adaptive systems;
+#X text 360 54 for Pure Data;
+#X text 34 562 in the example folder !;
+#X text 35 548 For much more examples see patches;
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+#X text 36 134 Normalized LMS: normalized least mean square;
+#X text 146 147 adaptation algorithm;
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+#X text 35 135 x[n] ... input signal of the system;
+#X text 35 120 c[n] ... coefficient vector of the system;
+#X text 35 104 y[n] ... output signal of the system;
+#X text 35 398 d[n] ... desired signal \, reference signal;
+#X text 50 74 -> y[n] = c0[n]*x[n] + c1[n]*x[n-1] + c2[n]*x[n-2] +
+...;
+#X text 35 312 mu ... step-size parameter (learning rate);
+#X text 34 282 c[n] ... new coefficient vector;
+#X text 34 297 c[n-1] ... old coefficient vector;
+#X text 34 354 e[n] ... error sample at time n \, LMS tries to minimize
+this error;
+#X text 35 382 x[n] ... tap-input vector at time n;
+#X text 71 241 with e[n] = d[n] - y[n];
+#X text 33 33 An adaptive system is simply a FIR filter with the coefficients
+c[n] \, which can be learned.;
+#X text 36 440 How to choose mu ?;
+#X text 36 463 Sufficient (deterministic) stability condition:;
+#X text 32 195 The normalized LMS Adaptation Algorithm:;
+#X text 70 226 c[n] = c[n-1] + mu/(alpha+abs(x[n])^2) *e[n]*x[n];
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+#X text 124 92 d[n];
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+#X msg 198 171 mu \$1;
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+#X text 275 147 <- try different mu;
+#X msg 199 109 clear;
+#X text 242 110 <- clear to start new adaptation;
+#X text 189 461 -- 1024 samples --;
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