From dd657ad3f1428b026486db3ec36691df17ddf515 Mon Sep 17 00:00:00 2001
From: "Steve M. Robbins" <smr@debian.org>
Date: Sat, 22 Oct 2011 04:54:51 +0200
Subject: Import nyquist_3.05.orig.tar.gz

[dgit import orig nyquist_3.05.orig.tar.gz]
---
 tran/aresonvc.alg | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 tran/aresonvc.alg

(limited to 'tran/aresonvc.alg')

diff --git a/tran/aresonvc.alg b/tran/aresonvc.alg
new file mode 100644
index 0000000..277ef8a
--- /dev/null
+++ b/tran/aresonvc.alg
@@ -0,0 +1,34 @@
+(ARESONVC-ALG
+(NAME "aresonvc")
+(ARGUMENTS ("sound_type" "s1") ("sound_type" "hz") ("double" "bw")
+           ("int" "normalization"))
+(LINEAR s1)
+(INLINE-INTERPOLATION T)
+(ALWAYS-SCALE hz)
+(START (MAX s1 hz))
+(TERMINATE (MIN s1 hz))
+(LOGICAL-STOP (MIN s1))
+(SAMPLE-RATE (MAX s1))
+(STEP-FUNCTION hz)
+(STATE ("double" "c3co" "exp(bw * -PI2 / s1->sr)")
+       ("double" "c3p1" "susp->c3co + 1.0")
+       ("double" "c3t4" "susp->c3co * 4.0")
+       ("double" "omc3" "1.0 - susp->c3co")
+       ("double" "c2" "0.0")
+       ("double" "c1" "0.0")
+       ("int" "normalization" "normalization")
+       ("double" "y1" "0.0")
+       ("double" "y2" "0.0;
+    hz->scale = (sample_type) (hz->scale * (PI2 / s1->sr))"))
+(DEPENDS ("c2" "hz" "c3t4 * cos(hz) / c3p1")
+         ("c1" "hz" "(normalization == 0 ? 0.0 :
+          (normalization == 1 ? 1.0 - omc3 * sqrt(1.0 - c2 * c2 / c3t4) :
+              1.0 - sqrt(c3p1 * c3p1 - c2 * c2) * omc3 / c3p1))"))
+(CONSTANT "c1" "c2" "c3co" "c3p1" "c3t4" "omc3" "normalization")
+(FORCE-INTO-REGISTER c3t4 c3p1 normalization omc3)
+(INNER-LOOP-LOCALS "            register double y0, current;")
+(INNER-LOOP "current = s1;
+            y0 = c1 * current + c2 * y1 - c3co * y2;
+            output = (sample_type) y0;
+            y2 = y1; y1 = y0 - current")
+)
-- 
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