a rectangular plot of peak vibration magnitude and phase vs

A plot of the frequency response of a system using straight-line segments called asymptotes.

A graphic plot of gain versus frequency for a control loop, typically used to verify control loop stability, including phase margin.

A transformation representation of a signal waveform, usually digital, from the time domain to the frequency domain showing signal magnitude as a function of its component frequency spectrum. Fundamental Frequency, Waveform Width, and Risetime are discernible from the plot, among other things.

A graph of gain versus frequency.

A frequency response graph that assumes delta A is zero until the cutoff freqency is reached.