Obviously, the most common way to analyze an audio signal is to listen to it.
However, it can also be useful to inspect an audio signal visually in some situations.
There are several common ways to visualize audio depending on what characteristic of the signal you are interested in.
In this section, I will present multiple ways to visualize audio, as well as the processing methods behind transforming the signals used in each plot.
Let’s have a look at the built-in function for plotting with Matlab.