Youre listening to 20,000 hz.
In the film and tv industry, sound editors often use sound libraries to find the effects they need.
Many of these recordings go back decades, and certain sounds end up getting used over and over.
For instance, heres a recording youve probably heard called two cats angrily yowling during cat fight.
These cat sounds have shown up in hundreds of movies and tv shows.
For instance, theyre often used for the Simpsons cat, snowball.
Well, I dont care what you say, she still loves us more, dont you, snowball?
These cat sounds apparently came from an early eighties recording of two real angry cats.
But some people think these sounds might have actually been performed by the legendary voice actor Frank Welker.
Here's Frank making cat noises on a variety show in the 1970s.
In fact, in some Simpsons episodes, Frank is specifically credited as the voice of Snowball and the Simpsons dog Santa's Little Helper.
If that were a real girl Scout, I'd have been bothered by now.
Theres also a classic scream that youll probably recognize.
The sound bite is called man lets out gut wrenching scream and falls into the distance.
That scream was recorded in the late seventies by an unknown voice artist.
It was first used in a 1980 film called the 9th Configuration.
During a bar fight scene, a bad guy with a knife lunges through a window.
In the mid nineties, the scream got a new burst of popularity thanks to an action movie called Broken Arrow.
In that movie, theres a character played by the football player turned actor, Howie Long.
In one scene, Howies character gets kicked out of a train, which is traveling over a bridge as he falls down the cliff.