Annoying "electricity" noise not stopping.

[rachelbenoit1982]

I was playing as Seven in a match and for some reason this loud droning noise was repeating for a minute or two without anything seemingly causing it. Not sure what it was but it kind've sounded like one of the electric sounds Seven would make, but it didn't stop.

 

[rachelbenoit1982]

Update I'm pretty sure it was the sound Bebop's laser makes, but he wasn't near me or firing his weapon.