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IEVref: | 702-04-49 | ID: | |

Language: | en | Status: Standard | |

Term: | energy spectral density | ||

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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 | ||

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