The Falcons signed Paul Soliai and Tyson Jackson during free agency but also re-signed Jonathan Babineaux and Peria Jerry to compete for roster spots during training camp, as the club struggled with injuries last season.
Peters told SiriusXM NFL Radio: "I'm excited about all the new additions. I think our defensive line will be much improved. I'm no exactly sure on scheme, but we've been multiple in the past.
"I pride myself on being flexible, so whether that's as an inside guy in a 4-3 or both in a 3-4."
The Falcons finished with a 4-12 record in the 2013 season.