4.2. Averaging & Filtering

Try these first

1. 1.

   What is the main purpose of averaging in signal analysis?

   Hint

   Think about what multiple measurements can do.

2. 2.

   Define a low-pass filter.

   Hint

   Consider the analogy of a sieve for liquids.

3. 3.

   What is the primary goal of averaging in signal processing?

   • To enhance noise
   • To reduce noise
   • To increase signal complexity

   Hint

   Think about the fundamental purpose of averaging.

4. 4.

   True or False: A low-pass filter allows high frequencies to pass.

   • True
   • False

   Hint

   Consider what each type of filter does.

5. 5.

   Given a set of sensor readings collected over several trials, demonstrate how you would apply averaging and filtering to enhance the data quality, and explain each step.

   Hint

   Think about how each step contributes to reducing noise.

6. 6.

   Explain a scenario in structural health monitoring where both averaging and filtering would be crucial. What potential issues might arise without these methods?

   Hint

   Consider the implications of noisy data in engineering contexts.