The command in the expression editor inserts the token at the insertion point in the editing pane. This token generates random but continuous values between 0 and 1 at each frame.
You can then multiply and add to the result to obtain noise patterns in any value range. Replace the dummy arguments as follows:
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Replace each argument with an expression. Different combinations result in different noise patterns. At least one argument should be an expression that varies over time; for example, or . You can multiply or divide the variable expression to change the frequency of the noise.
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Example 1
noise(Fc,1,2)
Generates continuous random numbers between 0 and 1.
Example 2
5*noise(Fc,1,2)+2
Generates continuous random numbers between 2 and 7.
Example 3
noise(Fc/20,1,2)
Generates low-frequency noise.
Example 4
noise(Fc,0,0) + noise(Fc/2,4,0)/2 + noise(Fc/4,1,1)/4
Generates a complex noise pattern composed of different frequencies and amplitudes.
Random 
