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Diffstat (limited to 'src/devices/sound/flt_biquad.h')
-rw-r--r--src/devices/sound/flt_biquad.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/devices/sound/flt_biquad.h b/src/devices/sound/flt_biquad.h
index ed4192ce44f..9ac3f820893 100644
--- a/src/devices/sound/flt_biquad.h
+++ b/src/devices/sound/flt_biquad.h
@@ -68,6 +68,11 @@ public:
// Multiple-Feedback high-pass
filter_biquad_device& opamp_mfb_highpass_setup(double r1, double r2, double c1, double c2, double c3);
+ // Differentiator band-pass
+ filter_biquad_device& opamp_diff_bandpass_setup(double r1, double r2, double c1, double c2);
+ void opamp_diff_bandpass_modify(double r1, double r2, double c1, double c2);
+ biquad_params opamp_diff_bandpass_calc(double r1, double r2, double c1, double c2);
+
protected:
// device-level overrides