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 (8,651 words) - 20:46, 29 July 2024
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 (838 words) - 08:15, 26 July 2024
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 (1,667 words) - 20:37, 16 April 2024
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 (3,102 words) - 00:52, 12 June 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) - 06:18, 12 July 2024
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...
22 KB (3,254 words) - 14:26, 1 August 2024
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
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 (4,051 words) - 16:46, 1 August 2024
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...
12 KB (1,435 words) - 07:45, 23 May 2024
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 (3,086 words) - 12:47, 15 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...
11 KB (892 words) - 20:45, 25 June 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 (4,308 words) - 06:26, 20 June 2024
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
(statistics) Measure (mathematics) Riemann–Stieltjes integral Weighting Window function Jane Grossman, Michael Grossman, Robert Katz. The First Systems of...
7 KB (1,150 words) - 00:17, 25 July 2022
\\[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
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 (1,522 words) - 06:40, 6 January 2024
windows, oriel windows, thermal, or Diocletian, windows, picture windows, rose windows, emergency exit windows, stained glass windows, French windows...
49 KB (5,647 words) - 06:36, 15 August 2024
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 (5,163 words) - 00:26, 21 June 2024
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 (1,250 words) - 19:49, 1 February 2024
Defunct families include Windows 9x, Windows Mobile, Windows Phone, and Windows Embedded Compact. The first version of Windows was released on November...
100 KB (8,946 words) - 00:24, 12 August 2024
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...
36 KB (5,665 words) - 18:03, 26 June 2024
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
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
Windows 10 is a major release of the Windows NT operating system developed by Microsoft. Microsoft described Windows 10 as an "operating system as a service"...
114 KB (6,837 words) - 15:35, 15 August 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...
71 KB (11,045 words) - 03:18, 22 July 2024
Microsoft Windows SDK, which includes documentation and tools for building software based on the Windows API. The functions provided by the Windows API can...
29 KB (3,483 words) - 22:17, 4 August 2024
frequency response. See Window function § Rectangular window for application of the sinc kernel as the simplest windowing function. Lanczos resampling Aliasing...
10 KB (1,284 words) - 05:12, 2 January 2024
WindowProc (or window procedure), also known as WndProc is a user-defined callback function that processes messages sent to a window. This function is...
2 KB (227 words) - 10:43, 12 July 2023
CUBRID (section Window functions)
needed] CUBRID provides support for window functions as defined in the SQL:2003 standard. The implemented functions are ROW_NUMBER, COUNT, MIN, MAX, SUM...
21 KB (1,915 words) - 08:55, 30 May 2024
Sliding DFT (redirect from Sliding windowed infinite Fourier transform)
window functions into sliding DFT. However, the IIR version called sliding windowed infinite Fourier transform (SWIFT) provides an exponential window...
2 KB (390 words) - 01:53, 15 February 2023