The loudspeakers are placed right in the middle of the Eagles practice fields, and the noise is deafening.

Through the music, the players are sprinting to the line of scrimmage to get a play off. There are no huddles. The plays are signaled in from three coaches on the sideline. When a session ends, a computerized voice over the loudspeaker announces the next session.

Then the music picks up again.

The only exception came when the voice announced: “Period 9: Teaching.” That’s when the music stops for a few minutes while the coaches instruct the players and made corrections in what they saw.

There were two such sessions of quiet when no one was moving — an oasis in a cacophony of noise and speed.

In all, there were 21 sessions lasting anywhere from five to 10 minutes. A wide genre of music was heard, ranging from Van Halen to Queen to Black Sabbath to Nicki Minaj to Flo-Rida to the Dropkick Murphys, and everything in between.

“(Practice) is a lot louder, but louder with a purpose, not just white noise,” offensive lineman Todd Herremans said. “But it’s fine. The tempo is a lot of fun. And we’re getting a lot accomplished while we’re at it.”

Welcome to the Eagles of 2013 under new coach Chip Kelly, where practice is unlike anything the players have ever seen before as they went through the first of four organized team activities (this one lasts three days).

The drills are in short bursts of constant movement, with virtually no standing around.