The Voice of "Big Brother"

When Jen was summoned to the Diary Room, was that supposed to be the voice of "Big Brother"? Not exactly how I expected "Big Brother" to sound. I was thinking more along the lines of Darth Vader from the original "Star Wars" flicks. I picture this guy sitting at an office desk, with his feet up, a microphone in his hand, and a half-eaten box of Ho-Ho's at his side.