Hi Don, I see that you have referenced a video from Paul at PS Audio and another video from Goldensound.
I've seen your academic background and appreciate your attempts to understand the science of audio. But I suggest you be a bit more discerning in which sources you consider to be trustworthy. Paul and Goldensound are not good sources. They are self-proclaimed experts in audio, the equivalent of the naturopath who makes a youtube video showing you the harms of vaccines, or the "scientist" who makes the youtube video giving their "evidence" for the flat earth. You are being misled by bad sources.
As an academic, please use better sources for your education in audio measurements.
I've seen your academic background and appreciate your attempts to understand the science of audio. But I suggest you be a bit more discerning in which sources you consider to be trustworthy. Paul and Goldensound are not good sources. They are self-proclaimed experts in audio, the equivalent of the naturopath who makes a youtube video showing you the harms of vaccines, or the "scientist" who makes the youtube video giving their "evidence" for the flat earth. You are being misled by bad sources.
As an academic, please use better sources for your education in audio measurements.