8. Table: Common Frequency Domain Terms

Try these first

1. 1.

   What does FFT stand for?

   Hint

   Focus on the speed aspect of Fourier analysis.

2. 2.

   What is the purpose of a filter in signal processing?

   Hint

   Remember that filters isolate desired properties.

3. 3.

   What is the purpose of the Fast Fourier Transform?

   • To increase signal power
   • To visualize time-domain signals
   • To compute frequency components efficiently

   Hint

   Think about processing speed in analyses.

4. 4.

   True or False: A filter can only remove frequencies and cannot amplify them.

   • True
   • False

   Hint

   Consider the function of filters in signal processing.

5. 5.

   Given a signal contaminated with multiple noise frequencies, discuss a step-by-step approach to decompose the signal using FFT and filters.

   Hint

   Think about the process of identifying frequencies and then selectively removing them.

6. 6.

   A structure exhibits unusual vibrations. Describe how you would use frequency analysis to diagnose potential issues and suggest improvements.

   Hint

   Consider the correlation between peak frequencies and structural integrity.