IEVref: 702-04-49 ID: Language: en Status: Standard Term: energy spectral density Synonym1: Synonym2: Synonym3: Symbol: Definition: the distribution as a function of frequency of the energy of a signal, or a noise, having a continuous spectrum and finite total energy NOTE 1 – The total energy of a signal or noise is by convention proportional to the time integral of the square of its instantaneous value. This integral is proportional to a physical energy if the characteristic quantity is a field quantity. NOTE 2 – The energy spectral density of a deterministic signal exists if its representative time function is integrable square. It is equal to the squared modulus of the Fourier transform of a signal and also equals the Fourier transform of the autocorrelation function of the signal. Publication date: 1992-03 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: