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Signal And Systems (Signals (Signal Transforms (Time Scale (Discrete Time,…
Signal And Systems
Signals
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Signal Types
Continuous Time
x(t)
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A continuous signal or a continuous-time signal is a varying quantity (a signal) whose domain, which is often time, is a continuum (e.g., a connected interval of the reals). That is, the function's domain is an uncountable set. The function itself need not be continuous.
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What is Signal ?
signal is a function that "conveys information about the behavior or attributes of some phenomenon, In the physical world, any quantity exhibiting variation in time or variation in space (such as an image) is potentially a signal that might provide information on the status of a physical system, or convey a message between observers, among other possibilities
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