"as if millions of voices suddenly cried out in terror and were suddenly silenced"

I wonder if I'm the first to notice this, or if my ears are playing tricks on me or what... In Star Wars, when the Death Star blows up Alderaan, pay attention to the sound just before the explosion. Doesn't it sound like a scream, cut off in mid just as the planet explodes?

I first noticed it when listening to the mono mix, and I'm pretty sure it's in all the others, too.

Is this real or is it just me? Has anyone pointed it out before?