Thank you @mitchco!@Dialectic I had a look at your measurements. Was the sweep output low? Do you have an SPL meter by any chance?
Is this a bare room? The frequency response shows room modes at 30, 54 and 90 Hz with some disturbance at 180 Hz and 435 Hz. You could use the onboard 8c PEQ's to tap those down a bit...
The ETC is pretty good in the sense of the reflections are down below -15 dB as compared to the direct sound, but they don't decay over time. Still the same peaky level to 40ms.
The RT60 or Topt shows relatively even decay, except the values are in the 600 to 750 ms range. I would have to do some math, but I suspect that for your size room, it should be roughly be about 1/2 that, like in the 300 to 400m ms range. So broad band absorption would bring down the overall decays time.
The Waterfall graph confirms the room modes down low. While you can use PEQ to bring down the peaks a bit, the long low end resonances are going to be a bit more difficult to deal with. The issue is that bass traps don't work so well below a room's transition frequency, like 100Hz and they are not surgical in nature as they also damp outside there intended usage. However, I have an idea I can share with you on that later.
Can you tell us more about your room or a pic or two?
Wrt sweep output. Understood, if it is loud in the room, but low on the measurement, typically means more mic gain required from the Babyface Pro. May need to look into that...
It's well known by small room acoustical experts that reverberation time or a "diffuse field" doesn't exist in a small room. If one is using this as a guide in treatment of this room, the result isn't going to be good.Someone needs to work out the Sabine equation to determine how much...
Thanks @mitchco, I need to play with the Babyface Pro interface. Part of the issue is that it is auto-configured by BACCH software, and that configuration is complex enough that I don't want to play with it. (I always bypass BACCH processing when measuring.)Awesome! Lots of fun. Sure, you could use a "room treatment" package for sure. If you could swing it, I would put the biggest bass traps within reason in the 4 corners of your room. Then absorb up the walls a bit. I use wide band absorber panels in my room 4' x 2' x 2", (4" would have been better) to reduce the overall wide-band decay time. Not too much as you don't want a dead sounding room. Someone needs to work out the Sabine equation to determine how much...
With that in place, then you can take another measurement and get into some 8c PEQ's below 500 Hz as they will be different with the acoustic package in place. Also we can look at that low frequency decay time (i.e. below 100 Hz) to see if it is still really long or not. If so, then there is a special DSP software plugin product that can assist, if you can use VST plugins.
Wrt sweep output. Understood, if it is loud in the room, but low on the measurement, typically means more mic gain required from the Babyface Pro. May need to look into that...
What's the best measurement in REW to use for this, I never know.It's well known by small room acoustical experts that reverberation time or a "diffuse field" doesn't exist in a small room. If one is using this as a guide in treatment of this room, the result isn't going to be good.
Buy a separate usb mic? Not fiddling with BACCH setup sounds sensible.Thanks @mitchco, I need to play with the Babyface Pro interface. Part of the issue is that it is auto-configured by BACCH software, and that configuration is complex enough that I don't want to play with it. (I always bypass BACCH processing when measuring.)
It's really noticeable the difference between normally furnished rooms and empty ones. I'm sure we have all noticed how much horrible echo rooms have when you move out, that final walk around the house checking you've not missed anything really does not sound like the rooms you lived in.Just putting objects and furniture in the room will bring this down as they will diffuse, but you might still may want some treatments.
Best for what?What's the best measurement in REW to use for this, I never know.