From e2e05b0520166fd62c01afd8d79c52dca5182d9c Mon Sep 17 00:00:00 2001
From: Thor Harald Johansen <thj@thj.no>
Date: Mon, 10 Apr 2023 13:15:00 +0200
Subject: [PATCH] Filter tuning

---
 include/synth/dsp/filter.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/synth/dsp/filter.h b/include/synth/dsp/filter.h
index f1fead1..4e523a0 100644
--- a/include/synth/dsp/filter.h
+++ b/include/synth/dsp/filter.h
@@ -26,7 +26,7 @@ public:
 
     Output tick(float as, float freq, float Q) {
         Output out;
-        float kK = tan(M_PI_4 * clamp(freq, 0, 1));
+        float kK = tan(M_PI_4 * clamp(0.001 * exp(freq * 6.907), 0, 1));
         float kQ = fmaxf(0, Q);
         
         float kdiv = 1 + kK/kQ + kK*kK;