Whenever you record somebody screeching in a very high pitched manner, you will usually get distortions. I will link to some examples (warning: LOUD)
Example 1 [48kHz signed 16bit wav]: this almost sounds like it has a robotic voice saying "Wow. Yeah, yeah." over the screaming.
Example 2 [8kHz signed 16bit wav]: here it is the most obvious.
Example 3 [32kHz signed 16bit wav]: here you can hear a single long "sweep" with a slight trill at the end.
This artifact is also sometimes used as a radiowaves/transmission/scanning sort of sound effect. How do you generate a more pure form of this sort of sound, apart from screaming into the microphone and attempting to make it sound less screechy?
If possible and applicable, I would like a low level "nitty gritty details" answer that uses compression/frequency/math to explain this, because I'm guessing it has something to do with those, but I don't know what terms to search for regarding this.