Hi all, Fractional resampler has additional "rate" signal input for supplying resampling ratio for each input signal sample. Changes of the signal on the "ratio" input might result in loss of tags that are close in time to these changes.
I observed the problem when I was implementing frequency offset corrector (attached flowgraph screenshot). Short description what is going on there: -when message comes to ppm_in port of the block "Controlled const source" changes value of constant at the output, -when Controlled rotator observe this change on its input, it emits stream tag, -for changes of about +/-50ppm (and above) on the 'ratio' input of the Fractional Resampler, tags coming from the Controlled rotator are not going through. Just by looking at the Fractional Resampler implementation (https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/fractional_resampler_cc_impl.cc#L104) I'm not able to locate source of the problem. I can implement minimal working example if needed. Best Regards, Piotr Krysik
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