1 files changed, 121 insertions, 0 deletions
diff --git a/s-autocompressor~.pd b/s-autocompressor~.pd
new file mode 100644
index 0000000..64c3162
--- /dev/null
+++ b/s-autocompressor~.pd
@@ -0,0 +1,121 @@
+#N canvas 255 105 459 100 10;
+#X obj 5 41 nbx 5 14 0 127 0 1 \$0/squelch \$1/squelch squelch 0 -8
+0 8 -260818 -1 -1 1 256;
+#N canvas 177 92 646 523 fft-analysis 0;
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+#X obj 75 409 *~;
+#X obj 76 114 *~;
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+#X obj 76 137 rfft~;
+#X obj 75 466 *~;
+#X obj 171 177 *~;
+#X obj 75 432 rifft~;
+#X obj 75 504 outlet~;
+#X obj 137 177 *~;
+#X obj 137 200 +~;
+#X obj 461 85 block~ 1024 4;
+#X obj 137 351 clip~;
+#X obj 110 114 tabreceive~ \$0-hann;
+#X obj 177 329 expr 0.01*$f1*$f1;
+#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 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 text 31 5 This is Miller's compressor. Any mistakes are my own.
+;
+#X obj 177 306 r \$0/squelch;
+#X msg 461 129 \; window-size 1024 \;;
+#X obj 461 107 loadbang;
+#X obj 75 485 *~ 32;
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+#X restore 92 22 pd fft-analysis;
+#N canvas 0 110 565 454 hann-window 0;
+#N canvas 0 0 450 300 (subpatch) 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).;
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