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4 cards from this section. Quick, good the night before a test.
What do we measure frequency in?
Think about how many cycles happen in one second.
What does the amplitude spectrum show?
Consider what aspect of the frequencies it reveals.
What is the unit used for measuring frequency?
Think about the cycles in a wave.
True or False: The amplitude spectrum provides information about the phase of a signal.
Recall the different roles of amplitude and phase spectra.
A structural health monitoring system detects a frequency shift of a bridge from 10Hz to 12Hz. What implications does this have for the structure?
Consider how stiffness correlates with frequency.
Given a signal with a power spectral density plot emphasizing peaks at certain frequencies, how would you isolate the desired frequency band using filters?
Influence of bandwidth on filtering choices is crucial here.
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