Is a pulse of white noise still properly described as stationary?

1. Is white noise always stationary?
2. What is stationary noise?
3. Is white Gaussian noise stationary?
4. How do you know if a signal is stationary?

Is white noise always stationary?

White noise is stationary in every sense. because the joint distribution of any set of ϵi does not depend on time at all. Observations are independent and identically distributed.

What is stationary noise?

A sound or SOUND OBJECT whose AMPLITUDE is relatively unchanging. However, in any natural sound the SPECTRUM is always changing (see diagram under FOURIER ANALYSIS) and there are usually slight fluctuations in amplitude even in what appears to be a steady sound.

Is white Gaussian noise stationary?

Gaussian white noise (GWN) is a stationary and ergodic random process with zero mean that is defined by the following fundamental property: any two values of GWN are statis- tically independent now matter how close they are in time.

How do you know if a signal is stationary?

For a stationary signal, the basic signal properties of mean and variance do not change over time. For such a signal, the measurement of the mean or variance over only one segment is sufficient to estimate the signal's true mean.