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Originally Posted by djgizmo  Once stained, I'm willing to run whatever tests that have been determined valid on the stained concrete room. Once finished, I'll start the process of laying down some kind of wood laminate flooring (which WILL include foam vapor barrier) and I'll run the exact test again. |
Excellent! However, the test microphone and loudspeaker must be in the exact same places for both tests, literally within one cubic inch from one test to the other. So plan to make marks on the ceiling and use a plumb bob (and tape measure for the height).
You'll also need to use suitable software such as the freeware
Room EQ Wizard (Windows) or
FuzzMeasure (Mac, $150). These programs offer all of the measurements needed - notably frequency response and reverb decay time. A single test can be saved to disk and analyzed in multiple ways later.
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My room would be treated with broadband absorbers to help eliminate room defect issues.
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It's important to run the tests with the room as empty as possible, and no absorption in the room. Having absorption in the room reduces the difference between the floor surfaces.
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since most wood flooring isn't rigidly mounted, wouldn't that cause an issue with difference of sound vs cement. Maybe causing a resonance somewhere?
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Possibly, but mainly at low frequencies.
Please take photos of both tests too!
--Ethan