Operations on signals

27.9.10
In signals processing we apply a group of operations on input signal to produce an output signal, this is what a discrete time system does. Generally there are the following basic operations that we can apply on a signal, ususally we will need a combination of these basic operations.
The basic operations on discrete time signals are
1.Shifting
2.Time reversal
3.Time scaling
4.Scalar multiplication
5.Signal Multiplier
6.Signal Addition

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