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<p>communication.</p>

<p><big>Time-domain model</big></p>
<p><a href="page.php?w=Image%3AZeroorderhold.impulseresponse.svg">thumb</a><a href="page.php?w=Image%3AZeroorderhold.signal.svg">thumb</a><a href="page.php?w=Image%3ASampled.signal.svg">thumb</a>A zero-order hold reconstructs the following continuous-time waveform from a sample sequence x[n], assuming one sample per time interval T:</p>

<p>where  is the <a href="page.php?w=rectangular_function">rectangular function</a>.</p>

<p>The function  is depicted in Figure 1, and  is the <a href="page.php?w=piecewise-constant">piecewise-constant</a></p><p>
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