= Bode plot
{c}
A <Bode plot> displays the gain and <oscillation phase> of a <frequency response> against a logarithmic <frequency> axis. Gain is often shown as $20\log_{10}|G(i\omega)|$ in decibels; phase can use degrees or <radians>. The <first-order low-pass filter> loses approximately $20$ decibels per factor of ten in <angular frequency> well above its corner. https://www.ocw.mit.edu/courses/2-004-dynamics-and-control-ii-spring-2008/2a0a97261561177bf1a91b07202bb09a_lecture_32.pdf[Rowell, lecture 32, section 2: logarithmic plots]{ref}
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