This video considers a wider class of nonstationary processes that share
some similarities with wide-sense periodic processes. Such
nonstationary processes occur in systems where, for example, there is
some aspect of upsampling, or a random process generates a new process
that is a function of some deterministic signal that has temporal
extent. This video looks at wide-sense periodic and wide-sense
cyclo-stationary processes. An example of pulse-amplitude modulation is
presented. Finally, globally non-stationary but locally-stationary
processes are discussed, called quasi-stationary processes. The
application of speech modelling is considered as an example of a
quasi-stationary process.
PGEE11164 Probability, Estimation Theory, and Random Signals Lectures -- School of Engineering, University of Edinburgh. Copyright James R. Hopgood and University of Edinburgh, Scotland, United Kingdom (UK). 2020.
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