CFO (Chief Fun Officer)
- Feb 13, 2016
- Seattle Area
If all room treatments were broad spectrum affecting all frequencies equally, I'd agree. But some are, and others are not. For example tuned membranes and bass traps can be tuned to affect narrower frequency ranges than tube traps. By absorbing the energy at the bass mode frequency, they weaken the reflected wave, which weakens the room mode. The treatments don't "know" it's a room mode, but you size & shape them to tune them to the room mode frequency, so the effect is the same: it prevents the room from resonating at that frequency (or at least weakens the resonance). Intuitively, it's like removing the wall that was causing the resonance, or at least making that wall semi-permeable to weaken the resonance. In this sense, one can say that it effectively changes the room's response. This is different from EQ, where the room modes are all the same and just as strong, but you're just reducing energy there.
That is unlike EQ where we can easily play with parametric ones until we get the right response with our ears and measurements. And reducing the energy removes the problem rather than create it and then hope that a few panels stuck on walls will remove it.