Long description: zfig3

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A block diagram illustrating the transformation of a signal from time index \(n\) to time index \(n-1\) via a component labeled \(z^{-1}\).

Alt text: A block diagram illustrating the transformation of a signal from time index \(n\) to time index \(n-1\) via a component labeled \(z^{-1}\).

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  • The diagram shows a signal path entering a rectangular block from the left.
  • The signal entering the block is labeled with the time index curly brace notation \(\{y_n\}\).
  • Inside the rectangular block, the label is \(z^{-1}\), representing a delay element.
  • A signal path exits the block to the right, labeled with the time index curly brace notation \(\{y_{n-1}\}\).
  • This structure represents a one-sample time delay operation on the signal \(y[n]\) to produce the output \(y[n-1]\).

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