notch: narrow the bandwidth with increasing frequency

diff --git a/scripts/_notch_bank.lua b/scripts/_notch_bank.lua
index 03a8dbf22f2868d103f18c7cc3d86afca6bd78ba..619541823d721ffd425e7e81e4134857ecaa25e6 100644 (file)
--- a/scripts/_notch_bank.lua
+++ b/scripts/_notch_bank.lua
@@ -94,7 +94,7 @@ function dsp_run (ins, outs, n_samples)
                                -- see http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:DSP:Biquad
                                -- for a list of available types, see
                                -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR.DSP.Biquad.Type
-                               filters[c][i]:compute (ARDOUR.DSP.BiquadType.Notch, freq * i, qual, 0)
+                               filters[c][i]:compute (ARDOUR.DSP.BiquadType.Notch, freq * i, qual * i, 0)
                        end
                end
        end