Clemen wrote: ↑Sat Sep 29, 2018 8:33 pm Drywall/gypsum transmits sounds, if
You were in the the u.s. You would want Homasote.
The problem here with most sound absorbent materials is humidity and its associated problems.
I would probably opt for thick curtains in synthetic fiber and CLOSED cell foam.
You can build a room within a room "iso booth" but I think you will have real problems with mold/mildew unless you're running a dehumidifier all the time, plus maybe an air to air heat exchanger.
For an "iso booth" you're talking floating floor and a bunch of other stuff. Serious pita, I was in the music industry for a long time.
Start with heavy drapes and go from there

Ok I'm thinking this through some more and I'm not saying you're wrong but I have questions.

Wouldn't the potential for mold/mildew be a function of air circulation? In other words, lets say I've got a duct fan for air intake and another for air exhaust, and so I'm replacing the volume of air in the chamber once every minute say. How does mold/mildew even become a problem then?

Also, I was thinking about lining the interior of the chamber with something like sheets which could be easily removed and put in a washing machine on a regular basis. I get it that if mold/mildew sets in the show is over but I'm just not seeing with these precautions how it ever takes root.

And drywall transmitting sounds... you mean if it's attached to the exterior wall using studs like as it's normally used for construction, right? But in this application the drywall is touching nothing but the supporting frame which itself is only attached to the floor. I get it that it's not perfect sound isolation but with two of these I have to believe it will be good enough, say I put a white noise generator in there. I realize that 100% isn't attainable, if it's, say, 95%, that could be life-changing.

finbar wrote: ↑Sat Sep 29, 2018 10:32 pm $150/m apartment in the provinces?

Giving up on the provinces, this will all be happening in PP.

finbar wrote: ↑Sat Sep 29, 2018 10:32 pm LOL, 9 women can't make a baby in a month.

But 9 guys can arrive at a design that is simple and effective enough for one guy to implement on his own.

Seriously, we get it down to the point where we can point people at which building supply store has the necessary materials and will do cutting and delivery and a list of all of the hardware you need and this is achievable.

finbar wrote: ↑Sat Sep 29, 2018 10:32 pm BTW, if you're serious about a soundproofing approach, the appropriate tech to search for is probably "resilient channel" and "constrained layer", unless you're planning to add a lot of masonry all around. But you're going to be in a sealed box.

I don't mind being in a sealed box if there's ventilation and it's possible to get in and out. I'll either be a) sleeping or b) focused on what's going on on my laptop.

And terms like those belong to the realm of the over-engineered solutions I was talking about originally. I mean these are real, professionally designed sound studios that are built into an existing structure and can support a flow of musicians day-in and day-out for an extended period of time. I don't need that. I can be careful to, say, not lean on the wall.

The principle I want to exploit is drop-dead simple. If sound hits mass, the mass vibrates and then transmits that sound but some of the energy is lost. The amount of energy lost depends on the material used. Put this material in an array and be careful to make it so that air is the only medium by which sound is conveying from one mass to the next and you should be able to achieve results.

I say this never having done anything like this before, but it makes sense to me and the potential reward is worth the risk of failure.

TOG wrote: ↑Sat Sep 29, 2018 10:58 pm Had you ever considered the reason he was listening to "nights in white satin" so loud was to drown out the noise you were making during the BJ?

I'm one of those who just twitches a little bit until the final moment, which sadly usually only lasts ten seconds or so.

No, I was clearly the innocent party in that particular case. And now I can never listen to the Moody Blues ever again.

Scarred for life you might say.

Damage your ears somehow so you can’t hear it

I am building a couple of rooftop apartments in PP at the moment and am heavily insulating it for heat and sound. Metal stud walls and ceiling with thick fiberglass, solid polystyrene foam boards and an air gap plus dry wall (plasterboard) and double glazed windows.

It should work fine but the cost is not cheap. Costs at least an extra $1000 per room.

fax wrote: ↑Sun Sep 30, 2018 9:57 am Damage your ears somehow so you can’t hear it

Sorry, but can you repeat that.

You know what I've found works better than earplugs when I'm in noisy hotel rooms? White noise youtube videos of rain storms and shit like that.

Cam Nivag wrote: ↑Sun Sep 30, 2018 12:50 pm You know what I've found works better than earplugs when I'm in noisy hotel rooms? White noise youtube videos of rain storms and shit like that.

Well when I'm in a noisy hotel room , I've usually got my ear hard against the wall so I can hear better.

Duncan wrote: ↑Sun Sep 30, 2018 12:49 pm Sorry, but can you repeat that.

WHAT?

If you have good air circulation you can greatly cut down on mold/mildew. I'm in snooky, with its attendant rain and constant humidity,my windows are never closed and I have have a fan going all night. I still need to put my bedding out once a week in the sun.
For both flooring and wall studs using rubber strips between the stud and wall material and between the floor and sub floor help a lot.
And mold and mildew propagate by spores of course, so unless you have a nice air filter they are always present.
Open cell foam is more effective for air transmitted sound, it makes a nice breeding area though. Closed cell is better between walls, floors etc and provides fewer havens for spores.
Good luck