Frequenzmasse
Frequenzmasse is a term used in German-language mathematics and signal processing to denote a measure that describes how a quantity is distributed over frequencies. It is closely related to the concept of a spectral measure in Fourier analysis and to the notion of a power spectral density.
Definition and interpretation: For a function f in L2(R) with Fourier transform F, the energy allocated to
Connections to stochastic processes: In the context of stationary processes, the spectral measure Φ describes how the
Properties: A Frequenzmasse is countably additive and nonnegative. Its total mass equals the total energy (or
Applications: Frequenzmasse concepts underlie spectral analysis, filter design, and estimation of power spectra in signal processing
See also: spectral measure, power spectral density, Spektralmaß, Leistungsdichte, Fourier transform.