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instantaneous signal

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См. также в других словарях:

  • Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… …   Wikipedia

  • Instantaneous phase — In signal processing, the instantaneous phase (or local phase or simply phase ) of a complex valued function x(t), is the real valued function::phi(t) = arg(x(t))., (see arg function)And for a real valued signal s(t), it is determined from the… …   Wikipedia

  • Signal compression — In telecommunication, the term signal compression has the following meanings: In analog (usually audio) systems, reduction of the dynamic range of a signal by controlling it as a function of the inverse relationship of its instantaneous value… …   Wikipedia

  • Sampling (signal processing) — Signal sampling representation. The continuous signal is represented with a green color whereas the discrete samples are in blue. In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the …   Wikipedia

  • Analytic signal — Not to be confused with Analytic function. In mathematics and signal processing, the analytic representation of a real valued function or signal facilitates many mathematical manipulations of the signal. The basic idea is that the negative… …   Wikipedia

  • Near Instantaneous Companded Audio Multiplex — NICAM steht für Near Instantaneous Companded Audio Multiplex (fast unmittelbar komprimierter Ton Multiplex) und beschreibt die digitale Übertragung zweier Tonkanäle beim analogen TV. Das Verfahren ist als ETS EN 300 163[1] spezifiziert. Der Ton… …   Deutsch Wikipedia

  • Jitter — For other meanings of this word, see Jitter (disambiguation). Jitter is the undesired deviation from true periodicity of an assumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may… …   Wikipedia

  • Weibull fading — The Weibull fading can be used as a simple statistical model of fading (named after Waloddi Weibull). In wireless communications, the Weibull fading distribution seems to exhibit good fit to experimental fading channel measurements for both… …   Wikipedia

  • Solid state relay — A solid state relay (SSR) is an electronic switch, which, unlike an electromechanical relay, contains no moving parts. The types of SSR are photo coupled SSR, transformer coupled SSR, and hybrid SSR. A photo coupled SSR is controlled by a low… …   Wikipedia

  • Real-time fMRI — In neuroimaging neuroscience, real time fMRI, broadly speaking, is a type of functional magnetic resonance imaging (fMRI) in which reconstruction of the raw data obtained by the brain scanner is done while the scan is happening. In brain scanning …   Wikipedia

  • True time delay — (TTD) is an electrical property of a transmitting apparatus and refers to invariance of time delay with frequency or to linear phase progression with frequency. TTD is an important characteristic of lossless and low loss, dispersion free,… …   Wikipedia

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