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pimr said:hi,
they are linear but not time invariant.As up sampling and downsampling operators both operate on time they do not affect scaling.
pimr
This is called time-variant, not time-invariantye.hui said:they are time invariant because if the input signal is delayed a specified time, the output signal will not be delayed the same time.
sorry, it is a clerical error.gnudaemon said:This is called time-variant, not time-invariantye.hui said:they are time invariant because if the input signal is delayed a specified time, the output signal will not be delayed the same time.
Just want to clarify to avoid confusing others.ye.hui said:sorry, it is a clerical error.gnudaemon said:This is called time-variant, not time-invariantye.hui said:they are time invariant because if the input signal is delayed a specified time, the output signal will not be delayed the same time.