non-glitchy GLaDOS voice lines?

[Bruner]

I swear a while ago I saw some Portal beta content demonstration video showcasing some Prospekt-era maps that had GLaDOS voice lines, but lines such as GlaDOS's "and laugh, and laugh, and laugh... oh boy." voice line weren't glitchy like in the final game.

Can somebody back this up? If I am remembering it correctly, is there a way I can get my hands on those non-glitchy GLaDOS voice lines? They must've come from those infamous Portal leaks.

[Bruner]

Let me specify that I'm not talking about unedited recordings by Ellen McLain. These lines I remember hearing still had all the robotic voice affects applied, just some weren't intentionally glitchy like in the final game.

Really, I could have sworn I heard these at some point. I'd love some clarification.