Need help taming Mid ~ High Frequencies

[ArcadeKO]

I have installed several bass traps and have evened out the bass pretty well. I could probably use a couple more bass traps but I am running out of room for them.

I have one entire wall of mirrored closet doors that have no treatment. I could make some hanging panels that are portable.

So this graph shows the pre-treated room (red) and the room after the treatment (blue). the spikes around 100 and 200 and 300 have been reduced by about 10 dB (or 50%). But My mids starting at 1k are out of control.

Can anyone recommend the best way to handle these frequencies between 1k ~ 20k Hz



This is basically what the room looks like now - the bass trap positions are fairly accurate. I deviated some from this original design, you can see the one entire untreated wall is in the foreground. (The only real difference is the small side panel is actually now above the TV and the small panel in the foreground is absent.)

[MarcB]

I'm also interested in this , your plot is similar to mine and I have a large wall of glass also (window 10ftx8ft). I've tried thicker curtains with no luck.

You could try firing your speakers straight ahead instead of pointing at you to take away the direct sound a bit, which is what I do.

[ArcadeKO]

I am hoping to build some gobos or removable hanging traps or maybe even just some dreaded foam tiles

but I am not sure what type of treatment I should add for this graph.

[DanDan]

Well done so far. A full range FR graph without smoothing is not very informative.
Also, a FR graph with two speakers running will be disinformative at HF.
So, maybe this is not as bad as the picture suggests?
Decent MF HF treatment over the glass will sort out any problems, if there are any. 10cm Fibre with a 10cm airgap behind, or HF Realtraps or GIKs.
You could have these freestanding, very useful for tracking control, or hang them. Pay particular attention to your side reflection areas, cover then fully, both sides. I would like to see much more cloud also.

DD

[ArcadeKO]

Maybe it's not as bad as I thought - smoothed a lot of the bass - red is the pre-treatment - green is the current.
This is done with 1/12th octave smoothing.

[ArcadeKO]

I think I am pretty good - I just installed the final trap in my early reflection point - the opposite reflection point on the left has a cloth fabric blind - I could try to build another trap and hang it in the window but I am kind of ready to move on and I sued up all the Roxul I had.

I ran one more impulse comparison after hanging this last one and it looks considerably better (to me anyway) - I am now under 200 ms as opposed to 400 before treatment. Waterfall also drops much faster but I am not going to bother posting those.

Thanks everyone for your help with this.

Before:

After: