It was my understanding it was Ted Templeman, and the "electronic sound" wasnt added, but sounds that way because it was spoken through the studio "talkback mic", ie: the way the person at the board communicates with the band while they are behind glass in the studio.
The story goes that Dave was making fun of a studio exec that walked in (that suit is you!) and Ted popped in on the talkback and uttered the "c'mon Dave, gimme a break" line.
So I heard

"Strange how laughter looks like crying with no sound: raindrops taste like tears without the pain"