I believe it's a white noise
noise
random in science terms means random duhhh. :) random is random in every language or subjects
"Random" is an adjective.
a
Yes it is. It means not by choice or purpose. (It is an idiomatic adverb when used with the preposition at, i.e. at random = randomly) E.g. There was a random power outage. / The message she sent contained random words.
Random dating is a form of dating in which a person dates more than one person that a time .
I believe it's a white noise
You might be thinking of 'white noise' except that white noise isn't really a random mix of pitches. I believe it is a deliberate mix of a very wide range of pitches. White noise is about as nonmusical as complete silence, but then again silence is not entirely nonmusical. I wouldn't enjoy a steady diet of white noise, but there are some experimental musics that incorporate it as an element.
chance
The cast of The Random Axe - 2009 includes: Obie Scott Wade as The Random Axe
The cast of At Random - 1960 includes: Karen Pyers as herself
The cast of To a Random - 1986 includes: Michael Burlingame Helen McKenna
The cast of Pure Random - 2008 includes: Numan Acar as The killed
The cast of Random Strangers - 2011 includes: Samy Challah as Rocky
The cast of Shooting at Random - 1916 includes: Jimmy Aubrey as Heinie
The cast of Random Pop - 2013 includes: Lawnette Mundy as herself
at random to represent the population
The cast of Random Letters - 2004 includes: Jake Alston Clay Humphrey