SenseWorld/Classes (extension)
| UGens > Analysis > Statistics
VarianceUGen
Extension
ExtensionCalculates the variance of a signal over a specified window.
Description
VarianceUGen is a pseudo UGen that calculates the variance of a signal over a specified time window.
The calculation done is the sum over a time window of (signal - mean).abs.squareddivided by the (length - 1) of the window.
The StdDevUGen takes the square root of the VarianceUGen.
Class Methods
.kr
Calculates the variance on a control rate signal.
Arguments:
| input |
The signal to calculate the variance of. |
| length |
The length in samples of the window |
| mean |
If you already calculate a mean (=RunningSum/length) in another part of your SynthDef you can supply it here, so it is not calculated again, thus safing processing power. |