A series of brief shouts of pain carried out by an actor were engravings in 1951. The recording was filed in the bookstore of special effects of the study and has been utilized in many of its movies since then.
The Designer of Sound of "Star Wars" Ben Burtt discovered the recording of the shout, that called "Wilhelm" Ben has adopted the shout by way of personal sonorous firm, and has included it in many of the movies in which has worked. He, and a small sound effects personnel circle continue the crusade to maintain the Wilhelm alive. The Wilhelm scream continues being listened in new movies each year.
http://es.youtube.com/watch?v=4zQjbULMSKA