List of explanations for common terms and abbreviations

Dieter@be · Post by **Dieter@be** » Sun Jun 26, 2005 9:13 pm

TL =?
RC= Resilient Channelhttp://soundproofing.org/images/ceiling_proof.jpg
more info I dont know how "true"/"honest" this explanation is, but it "looks" allright to me

the goal of this thread is to list all common terms and abbreviations

Sword9 · Post by **Sword9** » Sun Jun 26, 2005 9:52 pm

TL=Transmission Loss=The accumulated decrease in acoustic intensity as an acoustic pressure wave propagates outwards from a source. So basically, the reduction in noise level resulting from passage through an obstruction.

Also, the RC in your picture looks more like hat channel, then the RC that's usually suggested here on this forum.

rod gervais · Post by **rod gervais** » Mon Jun 27, 2005 5:44 am

Sword9 wrote: Also, the RC in your picture looks more like hat channel, then the RC that's usually suggested here on this forum.

RC-1 is a single legged member -

RC-2 - which is indicated in the link - is a 2 legged product - capable of carrying a greater load.

Hat Channel does not have the little slots shown on the sides of the legs in this link. It's those slots that accomplish the decoupling effect with this material.

Sincerely,

Rod

Sword9 · Post by **Sword9** » Mon Jun 27, 2005 8:08 am

sorry about that.

knightfly · Post by **knightfly** » Tue Jun 28, 2005 5:56 am

On the first link, I'd question the use of CLOSED cell foam - this will do nothing for mass, and make that much less air gap available for open-fibered insulation (which actually DOES improve TL a bit) - other than that, and not enough mass to help much in the lower leaf, looks OK... Steve