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LabVIEW Signal Processing by Mahesh L. Chugani, Abhay R. Samant, Michael Cerna

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Chapter 4. Windowing

Overview

In this chapter, you will learn about windows and how they affect the spectral characteristics of a signal.

Goals

  • Understand spectral leakage and the need for smoothing windows.

  • Identify the difference (both time and frequency domains) between a windowed and a nonwindowed signal.

  • Learn about the differences between the various types of windows in the Analysis Library and their applications.

  • Separate two sine waves that are closely spaced in the frequency domain but have a large amplitude difference.

Key Terms

About Spectral Leakage and Smoothing Windows

In practical applications, you can obtain only a finite number of samples of the signal. When you use the DFT/FFT to find ...

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