DBpedia 2016-04

Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q786423> ?p ?o }

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Q786423 subject Q7013146.
Q786423 subject Q7020694.
Q786423 subject Q7597810.
Q786423 subject Q8474686.
Q786423 abstract "In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time. Put simply, a time-domain graph shows how a signal changes over time, whereas a frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies. A frequency-domain representation can also include information on the phase shift that must be applied to each sinusoid in order to be able to recombine the frequency components to recover the original time signal.A given function or signal can be converted between the time and frequency domains with a pair of mathematical operators called a transform. An example is the Fourier transform, which converts the time function into a sum of sine waves of different frequencies, each of which represents a frequency component. The 'spectrum' of frequency components is the frequency domain representation of the signal. The inverse Fourier transform converts the frequency domain function back to a time function. A spectrum analyzer is the tool commonly used to visualize real-world signals in the frequency domain.Some specialized signal processing techniques use transforms that result in a joint time-frequency domain, with the instantaneous frequency being a key link between the time domain and the frequency domain.".
Q786423 thumbnail Fourier_transform_time_and_frequency_domains_(small).gif?width=300.
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Q786423 wikiPageWikiLink Q7013146.
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Q786423 comment "In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time. Put simply, a time-domain graph shows how a signal changes over time, whereas a frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies.".
Q786423 label "Frequency domain".
Q786423 depiction Fourier_transform_time_and_frequency_domains_(small).gif.