Lowpass Filter Design by Pole Placement
Lowpass Filter Design by Pole Placement
An ideal lowpass filter, drawn in blue, passes all frequencies less than and rejects all frequencies greater than . Such a filter cannot be implemented physically because it is non-causal. However, we can design causal filters, drawn in orange, that approximate the ideal lowpass filter. This Demonstration lets you design such a filter by locating poles (of the transfer function), drawn with red s, in different arrangements.
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