Linear time invariant (LTI) systems and their impulse response are necessary to understand in context of signals and systems and dsp. Linear (Linearity), time invariant (time invariance), causal (causality), stable (stability, Bounded input bounded output or BIBO) are the key properties. In this video, causal and non causal signals and LTI stability are explained logically with the help of very comprehensive solved examples.

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