• In mathematics and signal processing, an analytic signal is a complex-valued function that has no negative frequency components.  The real and imaginary...
    16 KB (2,675 words) - 14:49, 4 June 2024
  • Thumbnail for Envelope detector
    hardware, or as software using either a digital signal processor (DSP) or on a general-purpose CPU. Analytic signal Attack–decay–sustain–release envelope Lesurf...
    8 KB (1,001 words) - 17:54, 1 November 2024
  • Look up analytic, analytical, or analyticity in Wiktionary, the free dictionary. Analytic or analytical may refer to: Analytical chemistry, the analysis...
    5 KB (583 words) - 14:39, 20 March 2023
  • complex number representation of a sinusoid Analytic representation phase, instantaneous phase of an analytic signal representation Phase angle (astronomy)...
    543 bytes (98 words) - 09:47, 26 April 2020
  • Thumbnail for Sampling (signal processing)
    In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal. A common example is the conversion of a sound wave...
    31 KB (3,131 words) - 18:58, 8 May 2025
  • Hilbert transform (category Signal processing)
    transform is important in signal processing, where it is a component of the analytic representation of a real-valued signal u(t). The Hilbert transform...
    60 KB (8,167 words) - 17:05, 14 April 2025
  • Quadrature filter (category Signal processing)
    In signal processing, a quadrature filter q ( t ) {\displaystyle q(t)} is the analytic representation of the impulse response f ( t ) {\displaystyle f(t)}...
    2 KB (475 words) - 22:50, 24 November 2022
  • Thumbnail for In-phase and quadrature components
    that flows is "in quadrature" with the voltage. IQ phasor diagram Analytic signal IQ imbalance Constellation diagram Negative frequency Phasor Polar...
    14 KB (1,512 words) - 14:43, 17 April 2025
  • wavelet is formulated in terms of its Fourier transform as the Hilbert analytic signal of the conventional Mexican hat wavelet: Ψ ^ ( ω ) = { 2 2 3 π − 1...
    2 KB (271 words) - 04:01, 3 December 2021
  • Thumbnail for Analytical chemistry
    of analytical chemistry is maximizing the desired signal while minimizing the associated noise. The analytical figure of merit is known as the signal-to-noise...
    35 KB (4,066 words) - 14:30, 1 February 2025
  • (π/2, or 𝜆/4) Quadrature component of a composite signal Quadrature filter, the analytic signal of a real-valued filter Quadrature amplitude modulation...
    2 KB (325 words) - 16:37, 22 April 2025
  • Thumbnail for Negative frequency
    are often less tractable than complex exponential expressions. (see Analytic signal, Euler's formula § Relationship to trigonometry, and Phasor) Angle...
    7 KB (929 words) - 03:10, 19 March 2025
  • Thumbnail for Scanning electron microscope
    are often used in analytical SEM, along with the spectra made from the characteristic X-rays, because the intensity of the BSE signal is strongly related...
    68 KB (8,229 words) - 11:38, 16 May 2025
  • Thumbnail for Envelope (waves)
    analog signal. In digital signal processing, the envelope may be estimated employing the Hilbert transform or a moving RMS amplitude. Analytic signal § Complex...
    14 KB (1,844 words) - 16:05, 25 March 2025
  • Thumbnail for Synthesizer
    workstation Sampler Speech synthesis Vocaloid Components & technologies Analytic signal Envelope detector Low-frequency oscillation MIDI Music genres Computer...
    54 KB (5,280 words) - 02:10, 13 May 2025
  • false negative. Most analytical instruments produce a signal even when a blank (matrix without analyte) is analyzed. This signal is referred to as the...
    17 KB (2,178 words) - 15:30, 3 March 2025
  • Thumbnail for Calibration curve
    Calibration curve (category Analytical chemistry)
    calibration curve is a plot of how the instrumental response, the so-called analytical signal, changes with the concentration of the analyte (the substance to be...
    12 KB (1,438 words) - 19:07, 21 November 2024
  • Thumbnail for Single-sideband modulation
    {\displaystyle s_{\mathrm {a} }^{*}(t)\cdot e^{j2\pi f_{0}t}} is another analytic signal, whose real part is the actual lower-sideband transmission: s a ∗ (...
    33 KB (4,814 words) - 06:24, 11 May 2025
  • Pulse shaping (category Signal processing)
    original signal. A physical realization is always causal, since an analytic signal carries the information. Not every filter can be used as a pulse shaping...
    7 KB (964 words) - 18:41, 5 February 2025
  • Thumbnail for Fourier transform
    ∀   ξ < 0 {\displaystyle {\widehat {f}}=0,\ \forall \ \xi <0} (See Analytic signal. A simple example is e i 2 π ξ 0 x   ( ξ 0 > 0 ) . {\displaystyle e^{i2\pi...
    177 KB (21,314 words) - 09:59, 16 May 2025
  • the use of auto-focus techniques. This error can be measured by the analytic signal phase measurement method described earlier. Vertical nearfield errors:...
    10 KB (1,294 words) - 17:38, 31 January 2024
  • Thumbnail for Phasor
    represent the amplitude and phase of the signal using a single complex number. The only difference in their analytic representations is the complex amplitude...
    31 KB (4,997 words) - 08:14, 17 January 2025
  • electrode potentials is measured), amperometry (electric current is the analytical signal), coulometry (charge passed during a certain time is recorded). Potentiometry...
    8 KB (1,035 words) - 09:10, 27 August 2024
  • Thumbnail for Vocoder
    In the channel vocoder algorithm, among the two components of an analytic signal, considering only the amplitude component and simply ignoring the phase...
    34 KB (3,526 words) - 23:40, 18 April 2025
  • of the analytic signal. Since the analytic signal is bijective to the real signal and there is only positive frequency in the analytic signal (the real...
    9 KB (1,705 words) - 15:51, 16 March 2025
  • Thumbnail for Instantaneous phase and frequency
    Instantaneous phase and frequency (category Signal processing)
    complex numbers without concern about wrap-around. Angular displacement Analytic signal Frequency modulation Group delay Instantaneous amplitude Negative frequency...
    9 KB (1,511 words) - 17:25, 26 April 2025
  • transform Least-squares spectral analysis FFT multiplication Spectral method Fourier transform spectroscopy Signal analysis Analytic signal Welch method...
    3 KB (202 words) - 12:10, 30 October 2023
  • Time–frequency representation (category Signal estimation)
    distribution, as it was shown in that Wigner's formula needed to use the analytic signal defined in Ville's paper to be useful as a representation and for a...
    7 KB (928 words) - 09:37, 3 April 2025
  • An assay is an investigative (analytic) procedure in laboratory medicine, mining, pharmacology, environmental biology and molecular biology for qualitatively...
    28 KB (3,339 words) - 08:37, 27 January 2025
  • Thumbnail for Signal transduction
    Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events. Proteins responsible...
    62 KB (7,642 words) - 18:34, 24 April 2025