Starscream - Not alone in there

[balrog-roike.livejournal.com]

I'm not sure how it is in the original version, but at least in the German synchronisation of the recent TF:Prime episodes, Starscream's voice has a very special quality compared to the rather normal voices of the other Bots.
Whenever he speaks, especially once his voice reaches higher tones, you seem to hear a echo at the same time or as if two voices speak at once, one slightly higher and much more artificial sounding as the other.
I'm fairly certain he didn't speak like that in the first episodes he appeared in - perhaps I missed it because he's started whining as high as he could only recently, he just got beaten by Arcee over here - but given what will happen in the season's final, who knows if there isn't a reason why there seems to be another speaking with him, why his moods shifts faster and faster the more time passes and how that double-voice of his becomes more and more pronounced.

So, what I would like to see is an explanation/exploration of that double-voice. Unicron taking over a new/hidden acolyte, Starscream losing it and splitting into two distinct personalities, the Dark Energon leaving a mark, or whatever else you can come up with? ^^
Perhaps Starscream reappearing while the Bots try to get back their leader - just that Starscream suddenly appears on both sides, one openly, the other (or both) with a new paint-job, attitude and name, both with only one voice but perhaps a dastardly plan in their processors? Or is a certain ghost traveling the multiverse again?