Filter question.

[lalalandsynth]

Am I wrong in assuming that the one pole filter should be 6dB ?
Does not look like it?

[ustk]

@lalalandsynth afaik a single pole drops 3dB at the cut-off frequency

[lalalandsynth]

@ustk The 3db denotes the critical frequency and is used to tell the slope.The single pole filter slope should be a 6db filter but it looks sharper than that.

[Christoph Hart]

@lalalandsynth The filter coefficients used for the filter display are just approximates but the actual filter itself is using 6dB/octave.

If you want it to reflect on the filter display, you need to change the getApproximateCoefficients() method of the OnePole class.