I'm curious if the audio was being sent bit-perfect to the DAC for all of these tests (ALSA direct), or if it was being run through the audio mixer and being resampled

I can always tell if my 44.1 songs are being resampled to 48 because they're being run through the OS mixer

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dist-epoch 2 hours ago | parent [-]

Proper audio resampling should not be identifiable. Of course, the OS mixer probably doesn't do proper (CPU expensive) resampling.

But a quality audio player should account for this and do it's own.

	▲	rasz 34 minutes ago \| parent [-]
		"proper" resampling was expensive in 1997 when Intel was introducing fixed sampling AC'97, but was below noise floor of CPU load meter in 2007 when Microsoft released Vista killing hardware mixing.