Sheb Wooley

Shelby Fredrick "Sheb" Wooley (April 10, 1921 – September 16, 2003) was an American actor and country pop singer. He was best known for his 1958 novelty song "The Purple People Eater". He played Frank Miller, in the movie "High Noon", Travis Cobb in "The Outlaw Josey Wales" and Pete Nolan in the television series "Rawhide."
He is best known as the voice actor of the Wilhelm scream sound effect.