That particular phrase, like "Sir, yes sir!" on the English language side are ogg vorbis files in the Data / Sound / Speech folders - nine of them - with potentially 3 or more crewmen saying it, in several iterations of whisper, normal and shout... quite an undertaking. What CaptScurvy did in FotRSU was he "padded" those particular files with several seconds of blank audio file to either end of the phrase, and that eliminated the constant repeating. Now, usually speaking (sorry, bad pun), we only hear the one statement. But sometimes, we hear none... it all depends upon how "busy" the audio background is... As for "Passing thermal layer", that is a wav file in the root sound folder. One voice. The guy is up 24 hours a day, seven days a week, 365 days a year, except leap year, when it is 366 days. He never sleeps, and is always at the ready... so long as you are at 1x TC...
