Sounds like the audio was run though a oscillating fan. Lynch would approve.

do you know where i can find the whole pilot as it aired commercials and all?

I was obsessed with the series when it initially aired and couldn't wait until the following episode. That first season was outstanding.....but then the second season happened and the blush really faded from the rose. It was wildly inconsistent, especially when they brought in "guest directors" who seemed to fumble in their attempts to replicate that David Lynch style of weirdness. It was oftentimes embarrassing to watch. There were high points here and there but it was apparent the series was in decline. It should have been just a limited series and not tried to milk the premise. It was bound to get tiresome. Once the mystery of "who killed Laura Palmer " was resolved it drifted. Neither Lynch nor Mark Frost wanted the mystery to ever be solved and were forced by the network to give a resolution. I don't know how this would have gone over with fans. It's like having the last page of a mystery novel torn out and being denied an answer. The kind of ambiguities that Lynch enjoys might not have translated well to television. I don't know how I would have felt. Although the European version of the pilot does resolve it all. It's been a long time since I've watched it and cannot recall who was named the killer. It might have been Bob. It was a unique series.