# Dictionary:Bandwidth

${\displaystyle \int _{0}^{\infty }{\frac {p(f)df}{p_{max}}};}$
where ${\displaystyle p\left(f\right)}$ is the power at the frequency ${\displaystyle f}$ and ${\displaystyle p_{max}}$ is the maximum power. It is the width of a boxcar with the same total power and the same peak power.