processing and statistics, a window function (also known as an apodization function or tapering function) is a mathematical function that is zero-valued outside...
73 KB (8,662 words) - 03:53, 27 April 2025
In SQL, a window function or analytic function is a function which uses values from one or multiple rows to return a value for each row. (This contrasts...
9 KB (897 words) - 00:25, 5 February 2025
The Hann function is named after the Austrian meteorologist Julius von Hann. It is a window function used to perform Hann smoothing. The function, with length...
10 KB (1,665 words) - 10:43, 28 January 2025
window, also known as the Kaiser–Bessel window, was developed by James Kaiser at Bell Laboratories. It is a one-parameter family of window functions used...
8 KB (983 words) - 11:56, 8 April 2024
Spectral leakage (section Choice of window function)
refers to the effect of windowing, which is the product of s(t) with a different kind of function, the window function. Window functions happen to have finite...
25 KB (2,926 words) - 05:08, 11 January 2025
Lanczos resampling (redirect from Lanczos window)
of the Lanczos kernel, which is a sinc function windowed by the central lobe of a second, longer, sinc function. The sum of these translated and scaled...
13 KB (1,495 words) - 14:05, 21 April 2025
the IMDCT.) In principle, x and y could have different window functions, and the window function could also change from one block to the next (especially...
23 KB (3,258 words) - 10:12, 7 March 2025
Select (SQL) (section ROW_NUMBER() window function)
aggregate functions. The name recalls signal processing window functions. A window function call always contains an OVER clause. ROW_NUMBER() OVER may...
33 KB (3,100 words) - 20:59, 25 January 2025
Finite impulse response (redirect from Window design method)
the window function in the time domain results in the frequency response of the IIR being convolved with the Fourier transform (or DTFT) of the window function...
18 KB (3,089 words) - 12:26, 18 August 2024
Kernel (statistics) (redirect from Window width)
The term kernel is used in statistical analysis to refer to a window function. The term "kernel" has several distinct meanings in different branches of...
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Short-time Fourier transform (redirect from Windowed Fourier transform)
needed] Simply, in the continuous-time case, the function to be transformed is multiplied by a window function which is nonzero for only a short period of...
22 KB (4,055 words) - 09:25, 3 March 2025
windows is of critical importance in order to facilitate these applications mentioned above, respectively. Consider a two-dimensional window function...
16 KB (3,396 words) - 23:33, 11 August 2024
the exponential window function. Whereas in the simple moving average the past observations are weighted equally, exponential functions are used to assign...
27 KB (4,355 words) - 20:08, 30 April 2025
The function to be transformed is first multiplied by a Gaussian function, which can be regarded as a window function, and the resulting function is then...
10 KB (1,518 words) - 04:35, 3 February 2025
by a window function. Then it is a common practice to use zero-padding to graphically display and compare the detailed leakage patterns of window functions...
40 KB (5,076 words) - 03:43, 27 February 2025
examining the amplitude vs frequency characteristics of FIR filters and window functions. FFT spectrum analyzers are also implemented as a time-sequence of...
11 KB (1,251 words) - 15:45, 25 February 2025
Ringing artifacts (section Special functions)
the window function. Notably, the frequency response of the rectangular filter is the sinc function (the rectangular function and the sinc function are...
26 KB (3,411 words) - 05:17, 22 July 2023
windows as a primary metaphor In signal processing, the application of a window function to a signal In computer networking, a flow control mechanism to manage...
993 bytes (161 words) - 01:39, 21 August 2018
to define the triangular window sometimes called the Bartlett window. The most common definition is as a piecewise function: tri ( x ) = Λ ( x ) =...
6 KB (998 words) - 12:23, 26 January 2025
\\[3pt]0&{\text{otherwise.}}\end{cases}}} Most of the window functions like the Kaiser window The derivative of the logistic function. This is a scaled version of the derivative...
4 KB (505 words) - 18:00, 18 December 2023
industry – Windows (unqualified) for a consumer or corporate workstation, Windows Server for a server and Windows IoT for an embedded system. Windows is sold...
104 KB (9,214 words) - 20:02, 27 April 2025
window Optical window Infrared window Window period, in medicine, the time between first infection and detectability Window function, in signal processing...
3 KB (387 words) - 08:44, 31 July 2024
readings, sampled over a finite time interval (often defined by a window function). In image processing, the samples can be the values of pixels along...
76 KB (12,333 words) - 05:19, 3 May 2025
Spectral density (redirect from Power-spectral density function)
The spectral density is a function of frequency, not a function of time. However, the spectral density of a small window of a longer signal may be calculated...
37 KB (5,864 words) - 21:13, 4 May 2025
domain (lots of ringing). This can also be understood as applying a Window function to the Fourier series coefficients to balance maintaining a fast rise...
3 KB (369 words) - 16:25, 11 January 2025
windows, oriel windows, thermal, or Diocletian, windows, picture windows, rose windows, emergency exit windows, stained glass windows, French windows...
50 KB (5,734 words) - 17:36, 20 April 2025
The Windows versions use a BASIC syntax expanded to include many Windows functions, and the statements can be combined with calls to the Windows API....
22 KB (2,397 words) - 23:04, 5 April 2025
frequency response. See Window function § Rectangular window for application of the sinc kernel as the simplest windowing function. Lanczos resampling Aliasing...
10 KB (1,305 words) - 14:41, 27 April 2025
by the Windows API. Base services include features such as the file system, devices, processes, threads, and error handling. These functions reside in...
28 KB (3,279 words) - 22:04, 31 March 2025
fixed "window function" (such as a Gaussian blur), a distribution on two variables. Note that the matrix S w {\displaystyle S_{w}} is itself a function of...
34 KB (5,501 words) - 14:08, 15 March 2024