| The first thing you should do to learn is to use ears just as much as you do graphs. However, I'm sure I can provide you the graphs as well. Its not really hard to think about, if you absorb more at a given set of frequencies then you do at others, things will be uneven. If you trap the hell out of space that has a funky curve under 300Hz, its very possible to attenuate certain resonances a LOT more then others, like my little example of 250Hz vs 80Hz.
So far I think you agree that too much absorption can attenuate the high end frequencies, but do you think that that low end frequencies are magically defensive against attenuation due to absorption? And also how can you generalize about any of this without knowing the acoustics of the room with NO abosorption? |