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Answer by DSP Rookie for Negative group delay and envelope advance
Answer : No, any causal LTI system with frequency response $H(f)$ cannot produce the output $y(t)$ in advance. And, the answer lies in the causality of input signal $x(t)$ being applied to $h(t)$. Any...
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Answer by Dan Boschen for Negative group delay and envelope advance
Here is a actual example with negative group delay that will provide further insight:Below is a plot of the output and input of a pulse through a realizable filter that has negative group delay:It...
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I am having a doubt reading about delays in signal processing.Let there be an input to a LTI system with frequency response $H(f)$, given signal $x(t) = a(t)\cos(2\pi f_ot)$, where $a(t)$ is a...
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