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:
“It’s the same each time with progress. First they ignore you, then they say you’re mad, then dangerous, then there’s a pause and then you can’t find anyone who disagrees with you.”
—Tony Benn (b. 1925)
“You are the harvest and not the reaper
And of your domain another is the keeper.”
—John Ashbery (b. 1927)