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Design of digital filters with negative group delay

Here is another version. This is a tricky problem. Allpass filters clearly don't work here since the have a strictly monotonic decreasing phase, so the group delay is always positive. That means the ...
Hilmar's user avatar
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1 vote

Design of digital filters with negative group delay

The analog filter you came up with exemplifies the problem that one usually encounters when designing filters with negative group delay in a certain frequency band. The filter with transfer function $...
Matt L.'s user avatar
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2 votes
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group delay of Bessel filters

The group delay $\tau(\omega)$ of a Bessel filter equals $1/\omega_0$ at $\omega=0$, where $\omega_0$ is the normalization frequency. It is independent of the filter order, unless we choose different ...
Matt L.'s user avatar
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