"He will add to our rotation along the defensive line, while adding to our pass rush".
Irvin was released by the Raiders last week as the team is going through a complete overhaul.
Irvin, 31, was selected by the Seahawks with the No. 15 overall pick of the 2012 draft.
The Falcons confirmed they had a contract agreement with Irvin. This meant Irvin became a free-agent on Tuesday. A Super Bowl champ, he played under Falcons coach Dan Quinn in Seattle when Quinn was the Seahawks' defensive coordinator.
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He cleared waivers without any team submitting a claim, but it's worth noting that the Falcons weren't the only organization checking in with him once he hit free agency.
The Falcons (4-4) remain in playoff contention and will visit the Cleveland Browns (2-6-1) on Sunday. The addition of Irvin will add to the team's depth chart.
In all honesty, it was probably the easiest decision for Irvin, who is an Atlanta native, to choose the Falcons.
Irvin told ESPN's Vaughn McClure that he turned down more money from both the Patriots and Steelers to join the Falcons. Irvin will bring veteran leadership and know-how to a young defense that features talented players such as Takkarist McKinley, Vic Beasley, and Duke Riley.
It was as if every other team knew there was no chance.