add a biquad with audio inlet for coefficients.

add abstraction to compute a set of standard filter : 
low pass / high pass / band pass / band cut / low shelf and high shelf
 

svn path=/trunk/externals/nusmuk/; revision=10069

1 files changed, 100 insertions, 0 deletions

diff --git a/biquad/bq_coef_highshelf.pd b/biquad/bq_coef_highshelf.pd
new file mode 100644
index 0000000..52e1132
--- /dev/null
+++ b/biquad/bq_coef_highshelf.pd
@@ -0,0 +1,100 @@
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+#X text 92 34 f;
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+#X obj 106 188 samplerate~;
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+-1 -1;
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+#X text 387 146 A;
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+* ( ($f2-1) + ($f2+1)*$f4 ) \; $f2 * ( ($f2+1) + ($f2-1)*$f4 - $f1*$f3
+) \; ($f2+1) - ($f2-1)*$f4 + $f1*$f3 \;;
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