Talk:Soundproofing

From Wikipedia, the free encyclopedia

	This article is within the scope of the Professional sound production WikiProject, a collaborative effort to improve Wikipedia's coverage of the technology, equipment, companies and professions related to professional sound production. If you would like to participate, you can visit the project page, where you can join the project and see a list of open tasks.
Start	This article has been rated as Start-Class on the assessment scale.

Contents 1 No mattresses 2 COMPLETELY Soundproof 3 proposed merge 4 Sentence Review? 5 External Link to Blog 6 To Do list 7 products mention

[edit] No mattresses

how do I make a soundproof room without using mattresses? they are too punk rawk

Matresses certainly are not the only thing you could use to soundproof a room. Many companies exist that sell special soundproofing foam that can be inserted within the walls. If your budget is limited, any fabric, when enough is applied, will probably work. Not that I'm an expert in the field, but I do have that advice to offer. 65.43.199.68 13:53, 25 September 2006 (UTC)

[edit] COMPLETELY Soundproof

Wouldn't it be possible to construct a literally completely sound proof chamber surrounding the chamber in a layer of vacuum, even if the vacuum layer is very thin. In order for this to be done the chamber would have to be completely suspended in the vacuum using some kind of electromagnet that can act on the chamber through the vacuum. While it wouldn't technically be completely sound proof since a complete vacuum is theoretically impossible let alone acheivable with our technology, it seems as though using even a millimeter of vacuum would be much more effective than meters of concrete. Perhaps though forming a vacuum large enough to contain a usefully sized chamber is impractical with current technology, though again the vacuum layer would only have to be very thin seperating the chamber with the outside to acheive the desired affect. Any thoughts on this?

A vacuum seal is important for soundproofing since sound waves in air are a compression / vacuum wave. This creates an important sound barrier! Foam Rubber creates damping, so does fiberous materials like bedding, cotton, fiber glass and so on. But these materials will just let sound or air through! Solid Rubber is a good barrier, or a hard barrier that wont let any air through at all. Generally sound proofing consists of using layers of materials that absorb sound or reflect it. Damping materials usually are poor conductors of heat too... so your soundproof room is also fuel efficient! Industry standard is I think foam rubber acoustical foam, followed by ceiling tile material, a hard rubber barrier, then hardboard like gypsum or masonite, followed by compressed fiberglass, and rockwool bats(attic insulation) and then a hard wall like concrete which reflects some sound back through the whole thing. For home use one very good aerobic seal and a then covering a whole wall with damping material like blankets and egg crates is a good Idea! Some damping materials like eggcrates tend to be firehazards so be carefull. Also if this is a recording room you need some reflective surfaces to sound natural. Its a misconception that the recording industry does everything acoustically dead. They often have hard random surfaces with weird stuff stuffed in the walls for isolation!

i am not an expert on the materials science side, but i think the limiting factor would be the ability of the seal to hold over a long time period. most non-exotic construction materials tend to have some leakage. the other issue is "how do you attach the two sides of the vacuum sandwich?" any medium of attachment would transmit sound. still the idea may have some merit and is not to be discarded, sincerely Anlace 20:11, 19 March 2006 (UTC)

Ive developed the same exact idea (dowm to the magnets, I didt go with electromagnets) so, original poster: great minds think alike :). As for the reply, it doesn't have to be a sealed vacuum (in fact, it cant be, because the portal has to open and close to let you in and out! It is an actively evacuated vacuum, with a small pump actively pumping leaks, and after air pressure returns when you want to enter or exit the room, through a portal. btw I'm responsible for the current intro paragraphs to vacuum flask, you might find that useful too :).

Magnets will hold a charged wall up using the electromagnetic force! The photons that transmit the electromagnetic force will transfer any movement of a magnet to another magnet at the speed of light! Thus the Vacuum will transmit the shockwave at the speed of light rather than the speed of sound! Remember a speaker uses electromagnetic coils pushing against a magnet with the coils attached to a piece of paper(cone) which is transfered via electromagnetism to air! So sound does travel through vacuums! The damping will depend on the mass of the room, the damping of the magnets on both sides of the seal! But the net net is that it is an impractical Idea that won't work! Remember Guitar pickups use magnets, speaker boxes do, and so do microphones! But since sound waves in "air" would be stopped by this you are on the right track...

oh, and anlace: you DON'T "attach" the two sides, the inside room "floats" in the vacuum of the outside room. It floats because it's on magnets, and so is it's bottom. The big question is: does the vibration of the room go to the outside room through the vibration of the magnetic fields? If so, perhaps a better solution is to suspend the room on a very elastic suspension that dampens the vibration. A rubber band with a vibrating toy suspended from it potentially does not transfer the vibration to your hand? (Only the weight?)

I agree that a vacuum, even if not perfect, will drastically reduce the sound transmitted from the inner orb to the outside. However, it seems impractical, because it would be impossible to reach the inner orb without having to break the vacuum and for that reason i do not think it is efficient, as stated. —Preceding unsigned comment added by 24.47.93.70 (talk) 01:15, 31 October 2007 (UTC)

Vibrations end up coupling between the walls via whatever method is used to hold them apart, be it magnetic or elastic. Magnets will certainly couple vibration, as changing the distance between them changes the force between them (you want to have the change be as little as possible for minimum coupling). In conventional soundproofing, things like floor joists are typically mounted on rubber fittings to reduce this type of coupling between rooms. In a laboratory setting, things like optics tables are "floated" on compressed air pistons to reduce coupling between building vibrations and experiments. --Christopher Thomas 23:16, 28 August 2006 (UTC)

[edit] proposed merge

oppose merger. Diffuser is a small subset of soundproofing. these are the same things. Anlace 01:33, 12 March 2007 (UTC)

No diffusion is different! Think of light. The white cone over a lamp is a light diffuser, But completely sealing a lamp inside of a black box is lightproofing!

They are different things but both are important to pro audio!

[edit] Sentence Review?

"Most vibration / sound transfer from a room to the outside occurs through mechanical means."

Are there other means to transfer sound (which is a mechanical wave and by definition it needs a medium) other than mechanical?

The writer meant: mechanical as opposed to sound transfer through air, is how I understood it. 121.247.68.245 (talk) 17:39, 25 January 2008 (UTC)

[edit] External Link to Blog

According to Wikipedia Guideline Reliable Sources a blog is not a reliable source. The final external link, "How Sound Insulations Work" is indeed a blog. While the information is good, and the blog is well written, unless a reliable source can be found (ie, "Reliable sources are authors or publications regarded as trustworthy or authoritative in relation to the subject at hand. Reliable publications are those with an established structure for fact-checking and editorial oversight."), this external link will need to be removed. Of course, input from other editors on this matter is welcomed. Louislouislewee 06:07, 24 July 2007 (UTC)

Removed external link, no response to above notice. I suggest the same or similar data be located in a Reliable Source and included in article. Louislouislewee 04:30, 25 July 2007 (UTC)

[edit] To Do list

This article needs more about measurement and design. It could use a photo of construction methods for room-within-a-room. There needs to be a decision about the environmental roadway noise mitigation section: does this stay or get merged somewhere else? There needs to be a discussion of the fire danger of some soundproofing materials. The article should mention Wallace Sabine and Hermann von Helmholtz. Binksternet (talk) 19:10, 20 March 2008 (UTC)

Can someone provide information within the article about companies who manufacture different soundproofing materials —Preceding unsigned comment added by 66.155.139.158 (talk) 15:46, 2 April 2008 (UTC)

[edit] products mention

Does anyone know about who manufactures the best soundproofing materials?

Barnaby2122 (talk) 15:49, 2 April 2008 (UTC)