Thicker or more panels Jul 18, 2018 0:21:36 GMT via mobile
Post by patate91 on Jul 18, 2018 0:21:36 GMT
I see that you're using REW. When you take measurements, you can set the software to take multiple sweeps per measurement. This is useful in a noisy environment (usually by "noisy" we mean HVAC but screaming kids count, too) because the test signal will sum coherently and the noise will not, so the signal-to-noise ratio of the measurement is increased. It's basically a mathematical way of lessening the impact of noise on your measurements.
That being said, your data looks very good indeed. You're doing very well for a room of that size, far better than I would have expected based on your description. With the exception of the 68 Hz issue, your room is basically +/- 5 dB in the "modal" region (below Schroeder, if you're reading up on acoustics) so I think you should feel somewhat successful already.
Really tough to tell given the available data, but I have a suspicion that the 68 Hz cancellation is an axial mode between the floor and the ceiling. If this is the case, it's going to be at ear height regardless of where you sit in the room, and I don't think there's much to be done about it.
You can try to knock a few dB off the depth with some bass traps IF that's indeed what the issue is.
You nailed it lol. I experienced the axial mode. With a tone set on the dip I hear it perfectly while standing up. The speakers are on 4' or 5' stands. First I was using a cushion to sit higher. If I remove it my ears are just above the backrest, where I'm now placing the mic. The response is better, and I'm more confortable. 4 inch higher and the dip is worst.
I'll have to read about modal region, do you have a link or a suggestion?
I'm very happy with my setup and improvement, I wish I discovered acoustic earlier, it would have saved me money lol.