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You are not the only ones who are frustrated, I assure you. That's why I went away for a couple of days. And was extremely disappointed to come back and see myself being ridiculed and misrepresented once again. What purpose does calling me "thick" serve? Assuming you want to help, what do you...

I never realised typing emphasized text was rude, bitchy, or anything else negative that you described. I still think what you're experiencing is misunderstandings, it doesn't matter by whom. And when I said I have zero time, I meant that I have other things to do and I have to go. So I'll...

I have zero time right now but I see wood and cement "of similar stiffness" as an impossible end result here, and in general almost only in theory. I'm talking about WOOD-wood, not glue laminate or something similar which is an engineered wood product, not "wood". I wouldn't even refer to...

MDF is an engineered wood product. Its density is similar or higher than a number of hard hardwoods, such as birch or maple. It's also often covered with melamine, which is smooth and incredibly dense. Perhaps. I reckon that soft and thin dry timber will not reflect sound waves below 500 Hz...

Okay, okay. That's why I asked, because I was very confused about what you said and thought part of what you were trying to say was missing or something. What I read was (simplified) "can we agree that wood and concrete are totally different?" and you saying "no". That was again one moment where...

Most recently I was again looking at this chart, before I came back to check this thread: Coefficient Chart . I was most interested in the enormous differences I saw between "Plaster (gypsum or lime, on masonry)" and 10 mm plywood. I just used some PU foam a couple of hours ago. It's used to...

Just to make sure... you are saying that there's no difference between wood and concrete? A room in a wood cabin sounds the same as a concrete walled basement or garage? Or a cathedral with hard stone walls?

Rob, the basic concept has not changed. A quick recap: I already have 2x4's, chipboard, blockboard, beadboard, felt, old carpets, polyurethane panels, wall plugs, screws, nails, and probably something I forget -- everything I need to build something. Right? I also live a walking distance away...

To rob aylestone and witzendoz in particular: I realise some of my replies to you have been blunt and seem harsh (even if you didn't feel that way I still wanted to say this, because it might look different to a 3rd party). That was all on purpose. I might have said this even earlier, but I...

I'm going to have to look VERY hard through this entire thread to find an instance of that. There is an enormous misunderstanding already there that causes the following: what you tell me is of zero importance. Reason: I never said my intention was to play a drum kit in the middle of the night...

I meant that I never ever suggested doing anything of that sort.

Also, my cardboard box experiment clearly showed that even a VERY small barrier blocks sound. Some of it could have been absorbed there as well, but that's beside the point. You do not need an entire wall, period. If you did, how could gobos work?

This was precisely what was debunked previously. It was the breakthrough point. When sound is absorbed, it is not possible for it to leave the room. Thus it can not be heard on the other side of any wall, door, or even a gaping hole.

I am equally confused. Perspex screens around the kit??? What?

I refer to Rob's link above (thanks Rob! That's good info). Interesting you've never heard of it. PU is outwardly similar to styrofoam (EPS, XPS) which I'm sure you have heard of. As expensive as rockwool? ...what's your point? The reason I mentioned it is that I happen to have a couple of...

What do you guys think of polyurethane (sheets/blocks, used as thermal insulation in housing for example) as an absorbent material in a trap? The Internet Web Search Service says the density is comparable to that of commonly used rockwool. Which brings me to another thing, but I don't have time...

peghead: That circa 2 metre high thing immediately to the left of the piano (almost touching) is a bass trap, correct? But it's covered in foam or felt, so the surface facing the piano absorbs (and/or otherwise disturbs) high frequencies, right? Is that intentional and what's the logic behind...

The short answer to almost everything in that post is: no. ;) 1. I am not intending to attach timber directly to a concrete wall, like I've expressed multiple times. BTW, wall plugs are soft. Unless you think the vinyl/nylon/whatever they're made of is harder than concrete? Or brick? Or the...

Uuuuhm... one more thing. This was touched on previously. What happens, vibration-wise if I take a piece of polyester foam and hammer it to the wall with a 9" nail? When (and if even) people say that the one tiny nail on a several metres wide wall will transfer vibration and ruin the isolation...

sasquatch and mixsit, huge thanks to both of you. I've been banging my head on my hand here as people just keep repeating that "soundproofing" and "acoustic treatment (traps, etc)" are completely different things not related to each other, I'm an idiot who just doesn't get it, and my mind has...