zeitbereichliche

Zeitbereichliche is a German adjective used in technical writing to describe phenomena, measurements, or analyses that pertain to the time domain of a signal or process. The time domain concerns how a quantity changes over time, in contrast to the frequency domain, which characterizes its spectral content. The term is frequently combined with nouns such as Messung, Analyse, Modell oder Daten to specify a temporal perspective.

Typical uses include zeitbereichliche Messung (reading a signal as a function of time), zeitbereichliche Analyse (temporal analysis of a signal or system response), and zeitbereichliche Filterung (time-domain filtering, e.g., moving-average filters). In digital signal processing, time-domain representations show features such as transients, delays, and impulse or step responses. Many problems are solved by applying convolutions in the time domain, or by examining the impulse response directly.

Time-domain methods are often contrasted with frequency-domain methods obtained via Fourier or Laplace transforms. Some tasks are more convenient in one domain or the other, and transitions between domains are common, using transforms, discretization, and sampling. In practice, zeitbereichliche descriptions can be equivalent to frequency-domain descriptions when both domains are properly defined for the system under study.

Etymology: Zeitbereich means time domain; -lich is a German adjectival suffix; zeitbereichliche therefore describes properties related to the time-domain representation. The term is standard in German technical literature but is rarely used outside such contexts; in English texts the corresponding phrase is time-domain or time-domain related.

See also: Zeitbereich, Frequenzbereich, Fourier-Transformation, Laplace-Transformation, Impulsantwort, Signalverarbeitung, Convolution.