Thank you Sylvain: as this is a new computer, I had not installed pulseaudio. It seems the "default" Alsa backend indeed drops frames. I installed pulseaudio and running in debug mode (-vvvv) I cannot see frame size updates but most importantly my records are now continuous, problems solved.
Furthermore, the connection that used to be "forbidden" between the signal feeding the sink and the source output is now working properly and not generating the discoutinuous output I used to see. Thank you, JM -- JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe, 25000 Besancon, France May 19, 2020 2:52 PM, "Sylvain Munaut" <246...@gmail.com> wrote: > What audio backend are you using ? > > I know Pulse Audio / Alsa can just drop / duplicate samples. They try > to reduce latency by adjusting some buffer size dynamically but those > adjustments will cause discontinuities. > You can for instance run pulse audio in debug mode and you'll see if / > when it does those and if it matches with what you see. > > Cheers, > > Sylvain
