Topic: Mysterious Clocking/SRC Behavior on Digiface AES
On my Digiface AES (connected to an M2 Mac mini running MacOS Sonoma), I've got a non-synchronous, 44.1 kHz audio source connected to the RCA SPDIF input and in TotalMix FX I have that input routed to the main output submix (along with other sources).
Mysteriously, even when I've set the sample rate on the Digiface AES to 96 kHz and disabled the SRC on the SPDIF input, the sound coming out of the main monitors is just fine!
Here's a screenshot of the driver settings (showing "Lock" input status on the SPDIF input):
This status is also reflected on the front panel display of the Digiface AES (the input status icon is blinking green when the SRC is disabled but is solid blue when the SRC is enabled for that input).
I can't hear any difference between disabling the SRC and having it active on the SPDIF, but that doesn't make sense--I would expect the sound from a non-sync'd 44.1 kHz source being played through an interface running at 96 kHz to at least have loud clicking artifacts.
Is this possibly a driver bug (such that the SRC is actually active when it says it's not) or is there another reason for this behavior?
Thanks,
Adam