The Broncos started the NFL title game in the worst possible way as center Manny Ramirez snapped the ball early which led to a safety, and it was all downhill from there as John Fox's side slumped to a 35-point defeat at MetLife Stadium.
"That's the way the start of any Super Bowl is - it's going to be loud," Welker told reporters. "The fans are going to be yelling.
"They don't really know why they're yelling - it's just the start of the Super Bowl. We didn't prepare very well for that, and it showed."
Welker had eight catches for 84 yards in the Super Bowl.