But they are not allowing that fact to intimidate them.
"It's just noise," San Francisco special teams ace Bubba Ventrone said. "We know it's a loud place, but we just have to deal with it. We've played in loud games before. Just go do it."
Ventrone and several 49ers players said they feel as if they've been through the rigors of the road and playing in a loud, hostile stadium is just another challenge as they try to qualify for the Super Bowl. This is the 49ers' fifth road game in the past six weeks.
"(Dealing with noise) is something that also we have practiced throughout the whole entire season," San Francisco left tackle Joe Staley said. "We are very familiar with going silent count, is what we call it, on the road. That is something that we have not just practiced for one week."
With all due respect to the Seattle noise, few 49ers feel like it will reach the challenge of playing in near sub-zero conditions.
"Seattle is tough, but I'd rather play there than what we dealt with in Green Bay," 49ers' fullback Anthony Dixon said. "Noise doesn't hurt."