Stadiums may be empty when/if football starts its season this fall, but some games probably won’t look or sound that way. Fox is exploring ways to fill the empty National Football League venues with digitally-added fans and crowd noises, Fox Sports announcer Joe Buck said during an interview on Andy Cohen’s SiriusXM radio show. “I think Fox and these networks have to put crowd noise under us to make it a normal viewing experience at home,” USA Today reports Buck said, adding that the audio component was “pretty much a done deal.” He added: “I think whoever’s going to be...