Time domain is the analysis of mathematical functions, physical signals or time series of economic or environmental data, with respect to time. In the time domain, the signal or function's value is known for all real numbers, for the case of continuous time, or at various separate instants in the case of discrete time. An oscilloscope is a tool commonly used to visualize real-world signals in the time domain. A time-domain graph shows how a signal changes with time, whereas a frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies.
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Famous quotes containing the words time and/or domain:
“She isn’t harassed. She’s busy, and it’s glamorous to be busy. Indeed, the image of the on- the-go working mother is very like the glamorous image of the busy top executive. The scarcity of the working mother’s time seems like the scarcity of the top executive’s time.... The analogy between the busy working mother and the busy top executive obscures the wage gap between them at work, and their different amounts of backstage support at home.”
—Arlie Hochschild (20th century)
“In the domain of Political Economy, free scientific inquiry meets not merely the same enemies as in all other domains. The peculiar nature of the material it deals with, summons as foes into the field of battle the most violent, mean and malignant passions of the human breast, the Furies of private interest.”
—Karl Marx (1818–1883)