kraftspektret
Kraftspektret, often translated as the power spectrum, is a representation of how the power of a signal is distributed across frequency components. It is a fundamental concept in signal processing and related fields, used to characterize the spectral content of both deterministic signals and random processes.
The standard relationship uses the Fourier transform of a signal. For a deterministic, finite-duration signal, the
Common methods to estimate Kraftspektret from data include the periodogram, which is the squared magnitude of
Interpretation: higher values at a given frequency indicate greater energy content in that band. The spectrum
Applications: Kraftspektret is used in audio and speech analysis, vibration and structural health monitoring, electrical power
Limitations: finite data leads to variance and spectral leakage. Accurate PSD estimation requires careful consideration of
See also: Fourier transform, power spectral density, periodogram, Welch method, spectral analysis.