Add an RC highpass filter, which seemingly does a good job of emulating the one in...

[c64tapwav] / filter.h

diff --git a/filter.h b/filter.h
index a67f98a7f4a63bcc641a8cda72a9857b454cfc71..916d9ccab96210ea088ba466513513699c28ef3e 100644 (file)
--- a/filter.h
+++ b/filter.h
@@ -17,6 +17,7 @@ public:
        void reset();
 
        static Filter lpf(float cutoff_radians);
+       static Filter hpf(float cutoff_radians);
 
 private:
        float a1, a2, b0, b1, b2;