I am trying to scale a -1 to 1 control signal to modulate a filters cutoff frequency. I am trying to do this using the bickered filter - which ranges from 0.0001 to 22000 on a logarithmic scale. The way I have started to do this is by scaling the control signal to output values between 0 127, and then routed this to a dial. Because the filter is logarithmic, I can't really scaled [0 127 0.0001 22000.] because it produces a weird effect when changing values. Could somebody help me?