Hi, have an issue with controlling audio recording with function probe, that measures signal level. A variable 'muted' is set to 0 or 1 depending on current rf power threshold, and depending on muted state recording starting and stops. I suppose i would get continous file when level is above the threshold, but in fact script generatates files every second (file name contains current time), because filename variable updates continously and wav sink opens new files or rewrites old ones. So glad to hear your suggestions to solve this task.