is anyone familiar with studies that have looked at oxygen and carbon dioxide changes in sound booths / rooms, when occupied by a test subject during extended periods of time?
Depending on whether sound rooms are ventilated or not, changes in the composition of the air relative to ambient may change more or less, also depending on the volume of the room, and how long the subject remains inside without opening the door.
I'm interested to know whether anything is known regarding hypoxia or hypercapnia in test subjects associated with staying in sound rooms for extended periods of time. Patients with compromised health may be especially sensitive.
If anyone has used or knows about "good experimental practice" in audiology / hearing research settings in terms of opening the sound room door and letting it ventilate passively for a few minutes, that would also be of interest.
Thanks for any insights,