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 would be as wise to set up an accomplished lawyer to saw wood as a business as to condemn an educated and sensible woman to spend all her time boiling potatoes and patching old garments. Yet this is the lot of many a one who incessantly stitches and boils and bakes, compelled to thrust back out of sight the aspirations which fill her soul.”
—Sarah M. Grimke (1792–1873)
“No domain of nature is quite closed to man at all times.”
—Henry David Thoreau (1817–1862)