added doc directory

svn path=/trunk/; revision=220

1 files changed, 39 insertions, 0 deletions

diff --git a/externals/build/doc/lowshelf.pd b/externals/build/doc/lowshelf.pd
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index 00000000..140c754a
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+#N canvas 365 183 620 459 10;

+#X obj 77 182 print;

+#X floatatom 77 114;

+#X floatatom 192 113;

+#X msg 360 117 \; paint 0;

+#X obj 159 175 filtgain;

+#X msg 91 138 bang;

+#X text 6 334 See also:;

+#X obj 72 335 bandpass;

+#X obj 139 336 notch;

+#X obj 195 337 lowpass;

+#X obj 247 336 highpass;

+#X obj 247 358 equalizer;

+#X obj 72 357 highshelf;

+#X obj 139 357 lowshelf;

+#X obj 195 357 hlshelf;

+#X text 75 226 These filters are all controlled by a bandwidth which is expressed in octaves. A bandwidth of 100 is equivalent to one octave.;

+#X text 358 25 click first;

+#X text 211 159 click on filtgain to view frequency plot;

+#X text 6 393 (C) Guenter Geiger 2000;

+#X text 75 92 frequency;

+#X text 75 268 Attention \, only the left inlet triggers new coefficients for biquad~;

+#X floatatom 129 113;

+#X text 138 92 gain;

+#X text 71 26 ==============================================;

+#X text 192 92 slope (0 - 100);

+#X text 76 12 Lowshelf coefficients for biquad~;

+#X obj 31 113 r doit;

+#X msg 360 45 \; pd dsp 1 \; paint 1 \; doit bang \;;

+#X obj 77 160 lowshelf 4000 50 100;

+#X connect 1 0 28 0;

+#X connect 2 0 5 0;

+#X connect 2 0 28 2;

+#X connect 5 0 28 0;

+#X connect 21 0 5 0;

+#X connect 21 0 28 1;

+#X connect 26 0 28 0;

+#X connect 28 0 0 0;

+#X connect 28 0 4 0;