Creating the roar of the crowd

In the COVID era a nearly-empty NFL stadium can be made to sound like a packed arena, through the playback of recordings of fans made way back in pre-pandemic times. Vince Caputo, VP/senior sound supervisor of NFL Films, explains to correspondent David Pogue how a sound machine operated during Sunday’s Super Bowl can create everything from a dull roar to the cheers of a crowd going bonkers. Source