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:
“Once upon a time there were three little foxes
Who didn’t wear stockings, and they didn’t wear sockses,
But they all had handkerchiefs to blow their noses,
And they kept their handkerchiefs in cardboard boxes.”
—A.A. (Alan Alexander)
“No domain of nature is quite closed to man at all times.”
—Henry David Thoreau (1817–1862)