The energy spectrum refers to the distribution of energy levels present in a signal or function, often represented in terms of frequency. It provides insights into the intensity of different frequency components, revealing how much energy is concentrated at each frequency. This concept is crucial for analyzing signals in various fields, including physics and engineering, particularly through the lens of Parseval's identity, which relates the total energy of a signal to the sum of the squares of its Fourier coefficients.
congrats on reading the definition of Energy Spectrum. now let's actually learn it.