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I want to understand what is happening in below operation:

y(t)=SUM x(nT)h(t-3nT)

Here, x(nT) is sampled signal (say oversampled) and h(t) is its ideal reconstruction filter. As highlighted in the expression, amount of shift in the superposition summation is 3T. This is not an ordinary reconstruction.

Could you explain what we get at the output? Can we find an equivalent operation with known blocks for example the operation may equivalent to upsampling and then ordinary reconstruction?

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  • $\begingroup$ All of your samples are used, but the reconstruction kernel placed 3T from each other instead of T. $\endgroup$ – Mohammad M Oct 5 '19 at 22:06

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