Ok, that was 4th order Lagrange-interpolated fractional delay messing things up. Setting it to 5 or 3 fixes amplitude and phase. Also removed unnecessary fractional delay offset - I've misunderstood one of the descriptions. Only Thiran allpass-interpolated delay needs an offset, and a much larger one.I'll release a corrected version soon, once I measure with a less clunky tool than Baudline.According to Baudline, phase is linear as is amplitude and the measurement works, as there's an 80+ sample group delay. I get sawtooth in phase (looks more like blips) when I enable the antialiasing on input.I'll measure using REW, as it produces nice graphs.Edit: Attached. The measurement is correct, as shown by the IR - it looks like a Kaiser-windowed signal, which it is.Its builtin image tool doesn't work, so screenshots it is.Whoops, measured up to 200 Hz. Fixed!Links:http://www.baudline.com/index.htmlhttp://www.hometheatershack.com/roomeq/dounus: Doesn't work, or doesn't have a configuration UI? Not working would be a bug either on their end or less likely here, while lack of UI is an issue on their end - a VST host should synthesize UI when none is present.
