About: Digital signal (signal processing)

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In the context of digital signal processing (DSP), a digital signal is a discrete time, quantized amplitude signal. In other words, it is a sampled signal consisting of samples that take on values from a discrete set (a countable set that can be mapped one-to-one to a subset of integers). If that discrete set is finite, the discrete values can be represented with digital words of a finite width. Most commonly, these discrete values are represented as fixed-point words (either proportional to the waveform values or companded) or floating-point words.

Attributes	Values
rdf:type	broadcaster
rdfs:label	Digital signal (signal processing) (en)
rdfs:comment	In the context of digital signal processing (DSP), a digital signal is a discrete time, quantized amplitude signal. In other words, it is a sampled signal consisting of samples that take on values from a discrete set (a countable set that can be mapped one-to-one to a subset of integers). If that discrete set is finite, the discrete values can be represented with digital words of a finite width. Most commonly, these discrete values are represented as fixed-point words (either proportional to the waveform values or companded) or floating-point words. (en)
dbp:wikiPageUsesTemplate	dbt:For dbt:Merge_to dbt:Reflist dbt:Short_description dbt:Digital_electronics
Subject	Digital signal processing
thumbnail	wiki-commons:Special:FilePath/Digital.signal.discret.svg?width=300
foaf:depiction
gold:hypernym	Signal
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Digital_signal_(signal_processing)?oldid=1073047627&ns=0
Wikipage page ID	47577590 (xsd:integer)
page length (characters) of wiki page	4714 (xsd:nonNegativeInteger)
Wikipage revision ID	1073047627 (xsd:integer)
Link from a Wikipage to another Wikipage	Floating-point arithmetic Nyquist frequency 16-bit computing 24-bit computing 32-bit computing 8-bit computing Analog-to-digital converter Digital signal processing Digital signal processing Discrete time and continuous time Power of two Quantization (signal processing) Word (computer architecture) Linear function Pulse-code modulation Sampling (signal processing) Companding Countable set Fixed-point arithmetic Injective function Integer Saturation arithmetic Isolated point Signal
has abstract	In the context of digital signal processing (DSP), a digital signal is a discrete time, quantized amplitude signal. In other words, it is a sampled signal consisting of samples that take on values from a discrete set (a countable set that can be mapped one-to-one to a subset of integers). If that discrete set is finite, the discrete values can be represented with digital words of a finite width. Most commonly, these discrete values are represented as fixed-point words (either proportional to the waveform values or companded) or floating-point words. The process of analog-to-digital conversion produces a digital signal. The conversion process can be thought of as occurring in two steps: 1. * sampling, which produces a continuous-valued discrete-time signal, and 2. * quantization, which replaces each sample value by an approximation selected from a given discrete set (for example by truncating or rounding). It can be shown that an analog signal can be reconstructed after conversion to digital (down to the precision afforded by the quantization used), provided that the signal has negligible power in frequencies above the Nyquist limit and does not saturate the quantizer. Common practical digital signals are represented as 8-bit (256 levels), 16-bit (65,536 levels), 24-bit (16.8 million levels) and 32-bit (4.3 billion levels) using pulse-code modulation where the number of quantization levels is not necessarily limited to powers of two. A floating point representation is used in many DSP applications. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Digital_signal_(signal_processing)
is Wikipage redirect of	Digital audio signal
is Link from a Wikipage to another Wikipage of	Node-to-node data transfer Analog-to-digital converter Analog device Analog recording Analog transmission Audio bit depth Audio signal Audio signal processing General Instrument SP0256 Glossary of video terms Differential pulse-code modulation Digital Digital-to-analog converter Digital audio Digital mobile radio Digital signal (disambiguation) Citizens band radio DVD recorder Delta-sigma modulation Hurdy-gurdy Clipping (signal processing) Closed-circuit television camera Comparison of analog and digital recording High dynamic range Electrical engineering Graphics card Mixing console Haar wavelet Headset (audio) Instruments of Mercy Low-pass filter Loudness war Lanczos resampling Matrox Graphics eXpansion Modules Nintendo DSi Digital audio signal
is foaf:primaryTopic of	http://en.wikipedia.org/wiki/Digital_signal_(signal_processing)

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