audio_tony
Addicted to Fun and Learning
EDIT: I just realised messed up here - the input should be at 44.1k not the oscillator. DOH! Will correct tomorrow.That’s what they get as well, but once you switch to multiples of 44.1 kHz, performance is degraded. Retest at 44.1 kHz, and you’ll see the same.
Yes I know this is why I always test at 96kHz. FWIW I just tried 44.1 and THD hovers around 0.006 to 0.01%
My test setup is less than optimised, as I moved house recently and not yet got my bench fully operational - I just connected everything temporarily this morning.
Also - the DX card is in a different PC with different O/S (now Win 10) - interestingly, if I set the generator source to 88.2k / 24 bit the THD drops to 0.00058% - I had expected it to be worse than that, given that 88.2k is a multiple of 44.1k
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