GNU Octave by Example: A Fast and Practical Approach to Learning GNU Octave

© Ashwin Pajankar and Sharvani Chandu 2020

A. Pajankar, S. ChanduGNU Octave by Examplehttps://doi.org/10.1007/978-1-4842-6086-9_7

7. Signal Processing

Ashwin Pajankar¹  and Sharvani Chandu²

(1)

Nashik, Maharashtra, India

(2)

Pittsburgh, PA, USA

 

In Chapter 6, you learned about data analysis in GNU Octave in detail. In this chapter, you will learn about signals, different types of signals, Fourier transform, and how to use signals in GNU Octave.

Signals

A signal, by definition, refers to a function used to convey information about a phenomenon. In electronics, you can think of signal as a voltage or current or radiation value. A signal can be of many types. It can be an audio, image, or video signal. Audio signals can be captured through a microphone. Images ...