I am not understanding the OP point here. How does a preliminary study measuring changes in alveolar diffusing capacity post Covid relate to audio measurements?
What covid research can teach us about audio measurements.
Recent studies in Canada for patients with so-called long covid show us on how science and measurements and research actually works.
Patients with long covid suffering from limited ability to exercise passed most "normal" tests but it took a new type of test to positively identify a mechanism that explained why the patients suffered.
Honestly there is a lot of snake oil and charlatanism in our hobby, and I don't claim to discount that fact. What I do want to say is that science doesn't rest with 50 year old measurements. It evolves to measure and explain constantly.
The reason I am personally dissatisfied with audio measurements in the common literature is exactly because of this stagnation, and when these fail us we trust our ears and gut for lack of better tools.
Anyone who runs the same 20 measurements on an amplifier or DAC and claims it is science and that these measurements are all that can be known is fooling themselves into believing that they are scientists or that we have reached the limits of understanding.
And above all, caveat emptor!
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