👉 Spectral analysis is a field of statistics that deals with the properties of signals and their ability to be represented by a mathematical function. It focuses on the frequency content of a signal, which can be quantified using various measures such as power spectral density (PSD) or energy spectrum. The aim is to understand how much information a signal carries in terms of its frequency components and how well it can be captured by a given model, such as an analog-to-digital converter (ADC) or a
