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<p>systems.</p>

<p>Digital filters are much more flexible to synthesize and use than analog filters, where the constraints of the design permits their use. Notably, there is no need to consider component tolerances, and very high Q levels may be obtained.</p>

<p>FIR digital filters may be implemented by the direct <a href="page.php?w=convolution">convolution</a> of the desired impulse response with the input signal.They can easily be designed to give a <a href="page.php?w=matched_filter">matched filter</a> for any arbitrary pulse shape.</p>

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