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get a bass guitar in the room and go up and down the scale

the subjective loudness will be similar to what one hears with a very slow sinewave frequency sweep

some notes will be subjectively too loud and others too soft -- the worst in a room with concreate walls & floor

the experiment is easy

If a kick drum excites a room resonance, the problem is much worse, as that boom could be repeated every second in a rock song!

actually the only frequencies that are easily measured in a room at the listening position are under 100Hz. because wavelengths are so long moving the mic makes little difference

RT60 is meaningless in the relatively small rooms we use in our homes -- sound gets absorbed too fast

RT30 is useful for the bass room modes and is typically 200 milliseconds in a common 1/2 inch thick plasterboard on 2 x 4 sticks room in the US
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Richard BassNut Greene
"I know what I hear" is often an audio fantasyland

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