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:
“As you are entered with the class of Nat. philosophy, give to it the hours of lecture, but devote all your other time to Mathematics, avoiding company as the bane of all progress.”
—Thomas Jefferson (1743–1826)
“No domain of nature is quite closed to man at all times.”
—Henry David Thoreau (1817–1862)