I keep thinking that some of you guys keep missing the point; with all due respect.
The easily identified, inherent, signature sound of Carnegie Hall (or any other hall) swamps any deviation caused by humidity, number of attendees, etc. It really is not important to focus on those as relates to accuracy in a recording; although even those minor can, in fact, be heard on good recordings. The bigger, and important question should be: is the recording faithfull to that inherent quality constant? Is the equipment able to pass that information on (accuracy; or some part thereof)? To dismiss the relevance of a standard on the basis of inevitable subtle variability is silly.
The easily identified, inherent, signature sound of Carnegie Hall (or any other hall) swamps any deviation caused by humidity, number of attendees, etc. It really is not important to focus on those as relates to accuracy in a recording; although even those minor can, in fact, be heard on good recordings. The bigger, and important question should be: is the recording faithfull to that inherent quality constant? Is the equipment able to pass that information on (accuracy; or some part thereof)? To dismiss the relevance of a standard on the basis of inevitable subtle variability is silly.