Bill,
It still sort of depends on the acoustics of the space; the size of the untreated surfaces and the closeness to the mic.
Explanation: I had an "audio grab" gig for an ad agency.; a pro basketball player in for a photo shoot. The professional photo studio was in an industrial space. Twenty foot metal ceilings, cinderblock and drywall walls, cement floor.
A 6-foot by 6-foot space had been prepared with c-stands and sound blankets to surround the talent and (me) the sound guy on all four sides. That would qualify under your guidelines. There was way too much reflected voice going out and coming back in the open top.
Although they told me they "had the sound problem covered", I instinctively did not believe them and brought three 2'x4' foam panels and two more sound blankets.
With a few more pipes, we created a ceiling system on top of their booth. We left a hole in one corner and shot a light down through it so we could see inside. Job done.
Oh! The ad agency was in Dallas. They wanted to use an iphone to direct him. He had a headphone/mic rig. I said, "lets see." The RF from the iphone was throwing rf into my hardwired mic. I asked for a small table. Put it behind him so he was between the iphone and the mic and used his body as an RF absorber to keep the rf out of my mic. That worked.
Regards,
Ty Ford
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