Methods for measuring the energy density spectrum of burst-like events have been categorized. Five methods that rely on measuring samples of the energy density spectrum are distinguished. A tutorial exposition of the principles underlying these methods is given. This work represents the second phase of a program by the IEEE Subcommittee on Methods of Measurement of Noise of the G-AE Standards Committee aimed at developing a unified approach to burst measurements, and is an adaptation of the Technical Report on Recommended Practices for Burst Measurements in the Frequency Domain, IEEE No. 265.