Frequency domain vs time domain. This video discusses the use of frequency domain analysis by taking an example of audio signal in Audacity software and outline the key benefits of working in frequency domain as compared to time domain.
Useful material includes
Oppenheim, A.V., Willsky, A.S., Nawab, H., Signals and Systems (2nd ed.), Prentice Hall (1996)
https://www.amazing-animations.com/an..., date accessed 17 Sept, 2020.