Like I said, a UMIK-1 is good enough for residential room correction… Since every one has different external and internal ear shapes I’m not so sure that the B & K device would be of much good for myself and others that may be listening with me…
Not about the B & K tool… its about the rationale for a real-world corollary physical presence in the acquisitions, whether or not the end goal is in support of a single subject or multiple subjects in the listening space.
I guess I would need many room correction filters then… One for me naked, one for me and her naked… One with my tin foil hat on… One with me and her with our tinfoil hats on… Lol… A signal filter of the room at the main listening position will be good enough… Oh, wait, what about that dram of scotch on the coffee table… Can you hear the difference if it is full or empty?
And what about the dog and cats? 
A dogsorber and catsorber and they just keep roaming around… 
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Well, it is a lot like chasing ghosts… Is a recording of a creaking-door good enough to prove the existence of a ghost? Or do we need more information to affirm the certainty of our presumptive assessment of the recording, that confirms the existence of a ghost? 
My friend has some stuff to say about listening environments.
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So I’ve got to buy a second UMIK-1 and baffles and learn alt-Blumlein shuffling in order to get a really good convolution filter for my stereo speaker system? Sigh. 
You can make a Left Channel and Right Channel aggregate measurement using a single microphone and a properly implemented baffle. However, the best option is to sit in the preferred auditioning position with the microphone receiver tube placed close to the ear-canal/pinnae forward-facing at 45° and making the independent Left Channel and Right Channel multi-acquisition this way.
It would appear so….. Having worked wtih Jonathan Digby a couple of times, recording at my venue, I have oft been confused!
His full paper is an interesting read.
His recording method for this paper, using a mannequin head to separate a pair of mics is cool.
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This is something that most will never invest in…
(Specifications)