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:
“Today we all speak, if not the same tongue, the same universal language. There is no one center, and time has lost its former coherence: East and West, yesterday and tomorrow exist as a confused jumble in each one of us. Different times and different spaces are combined in a here and now that is everywhere at once.”
—Octavio Paz (b. 1914)
“No domain of nature is quite closed to man at all times.”
—Henry David Thoreau (1817–1862)