x_axis np arange( len_half (frequency_sampling length_signal nowvisualize the characterization of signal as followsplt figure(plt plot(x_axissignal_powercolor='black'plt xlabel('frequency (khz)'plt ylabel('signal power (db)'plt show(you can observe the output graph of the above code as shown in the image belowgenerating monotone audio signal the two steps that you have seen till now are important to learn about signals nowthis step will be useful if you want to generate the audio signal with some predefined parameters note that this step will save the audio signal in an output file example in the following examplewe are going to generate monotone signalusing pythonwhich will be stored in file for thisyou will have to take the following stepsimport the necessary packages as shownimport numpy as np