Summary

Math

Phase delay calculated for a first order LP filter by this formula:

${\displaystyle t_{ph}(f)={\frac {\arctan \left({\frac {f}{f_{g}}}\right)}{2\pi f}}}$

Group delay calculated for a first order LP filter by this formula:

${\displaystyle t_{gr}(f)={\frac {1}{2\pi f_{g}}}\cdot {\frac {1}{1+{\left({\frac {f}{f_{g}}}\right)}^{2}}}}$

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