I've often felt like participating but, well, too many forums, too little time. Hi, I've been reading the forums here for over a year. Thank you for the work you've done creating it and I'm looking forward to following its development. I hope your Deltawave becomes the reference goto application in future. Until now, Diffmaker has been the goto application but sadly it really doesn't work properly and isn't reliable. It would be nice though to have a checkbox during installation asking if a desktop shortcut is wanted or not. Your website design is excellent, installation is very smooth and trouble free. As it is, the "Non-Linear Drift Correction" does not stay unchecked, it has to be manually unchecked each time before running a match or the match ends up failing.Īlso, I find software a lot easier to use initially if there's a tooltip that shows up when hovering over a setting button, just a short paragraph to give a brief outline of what that setting actually does. As it is I keep wondering if the settings really are saved! Also it would be nice to have a 'restore default settings' button on the setup page. I feel I need to try your program first before making any further comments -)Ĭlick to expand.but we're all used to having save buttons on settings pages. A way to mitigate this is curve-fitting an analytical transfer function to the reasonably smoothed empirical one, if we know the correction function is min-phase then this can be a bunch of simple IIR filters which can be applied directly (or used to obtain a "clean" convolution kernel from that by sampling a dirac response). I'm aware of the problems of processing noise. In general, any slightly moving pole or zero in the analog transfer function will result in a correction shelving filter (with a fraction of a dB level change). For the capacitor example we know that the correction function would have the shape of an analog (min-phase) shelving filter. The influence of the linear differences could be brought down one order of magnitude easily if most of it were factored out by applying a well-estimated or measured transfer function. This will introduce an (additional) highpass in the loopback chain but the corner frequencies will slightly differ (even a after selection and/or analog fine trim) and the resulting phase shift spoils coherence at low frequencies, decreasing null depth. Think applications like capacitor testing, two caps of same nominal value but different construction, say input coupling capacitors. Yes, correction of the linear part of the total system error, actually the A to B difference.
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