It's a moot point because they can hear you if you're wearing a spacesuit and a communication device,
and if you're in a vacuum without a spacesuit you'd be dead anyway.
(
The Legendary Pink Dot survived yet another,
Tue 11 May 2021, 15:21,
archived)
"In space, xenomorphs will sabotage your radio"
(
dribble,
Tue 11 May 2021, 16:16,
archived)