Project sound insulation, Determined to get rid of some road noise Options

[GotToyota]

Alright guys, I decided to tackle a project similar to what a member on here did by getting rid of some noise with a carpeting material. I'm attempting the same thing, except with my door panels and rear panels. I went to Home Depot and bought a 6'x9' roll of carpet padding for $30, along with a can of 3M rubber and vinyl spray adhesive. I already tried to deaden the sound a bit by using some extra Dynamat I had, but it didn't help much at all. Spray the door panel on the areas where you will be placing the padding, then rip pieces to the size of your choice and place accordingly. WARNING: You might want to let these panels sit overnight, because the smell isn't too pleasant.

Pics of the materials:


Starting door panel:


Door panel finished:


After I get everything finished I'll let you guys know how well this worked. I spent $40 in materials with tax, so it would be a pretty cheap solution to getting rid of some exterior road noise. Not the prettiest solution, but I feel it should help out greatly.

-Matt

[Galcobar]

Aye: dampening = weight, to reduce resonance and sympathetic vibration. Insulation = absorption, to reduce transmission.

The one that's popular on Corvette forums, which I'll do once my Focal door speakers come in, is duct insulation. It's a foam backed by foil, self-adhering. The idea is that the road noise is absorbed through the foam, what makes it through the foam bounces off the foil and is further absorbed in the foam. Frost King/Thermwell is the usual brand, carried at Lowes and Home Depot.
http://mikemercury.home.att.net/sound.htm