2017-07-27T19:27:09+03:00[Europe/Moscow] en true Bode plot, Chirp, Negative feedback, Analytic signal, Aliasing, Analog signal, Bandwidth (signal processing), Discrete-time signal, Estimation theory, Sampling (signal processing), Short-time Fourier transform, Signal (electrical engineering), Window function, Impulse response, Spectrum analyzer, Hilbert transform, Spectral density, Image scaling, In-phase and quadrature components, Wavelet transform, Baseband, Cross-covariance flashcards
Signal processing

Signal processing

  • Bode plot
    In electrical engineering and control theory, a Bode plot /ˈboʊdi/ is a graph of the frequency response of a system.
  • Chirp
    A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time.
  • Negative feedback
    Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.
  • Analytic signal
    In mathematics and signal processing, an analytic signal is a complex-valued function that has no negative frequency components.
  • Aliasing
    In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable (or aliases of one another) when sampled.
  • Analog signal
    (For a broader coverage related to this topic, see Signal (electronics).) An analog signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.
  • Bandwidth (signal processing)
    Bandwidth is the difference between the upper and lower frequencies in a continuous set of frequencies.
  • Discrete-time signal
    A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.
  • Estimation theory
    Estimation theory is a branch of statistics that deals with estimating the values of parameters based on measured empirical data that has a random component.
  • Sampling (signal processing)
    In signal processing, sampling is the reduction of a continuous signal to a discrete signal.
  • Short-time Fourier transform
    The short-time Fourier transform (STFT), or alternatively short-term Fourier transform, is a Fourier-related transform used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time.
  • Signal (electrical engineering)
    A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".
  • Window function
    In signal processing, a window function (also known as an apodization function or tapering function) is a mathematical function that is zero-valued outside of some chosen interval.
  • Impulse response
    In signal processing, the impulse response, or impulse response function (IRF), of a dynamic system is its output when presented with a brief input signal, called an impulse.
  • Spectrum analyzer
    A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument.
  • Hilbert transform
    In mathematics and in signal processing, the Hilbert transform is a linear operator that takes a function, u(t), and produces a function, H(u)(t), with the same domain.
  • Spectral density
    The power spectrum of a time series describes the distribution of power into frequency components composing that signal.
  • Image scaling
    In computer graphics and digital imaging, scaling refers to the resizing of a digital image.
  • In-phase and quadrature components
    In electrical engineering, a sinusoid with angle modulation can be decomposed into, or synthesized from, two amplitude-modulated sinusoids that are offset in phase by one-quarter cycle (π/2 radians).
  • Wavelet transform
    In mathematics, a wavelet series is a representation of a square-integrable (real- or complex-valued) function by a certain orthonormal series generated by a wavelet.
  • Baseband
    Baseband is a signal that has a very narrow frequency range, i.
  • Cross-covariance
    In probability and statistics, given two stochastic processes and , the cross-covariance is a function that gives the covariance of one process with the other at pairs of time points.