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Window (computing) In computing, a window is a graphical control element. It consists of a visual area containing some of the graphical user interface of the program it belongs to and is framed by a window decoration. It usually has a rectangular shape [1] that can overlap with the area of other windows. It displays the output of and may allow ...
In signal processing and statistics, a window function (also known as an apodization function or tapering function[ 1 ]) is a mathematical function that is zero-valued outside of some chosen interval. Typically, window functions are symmetric around the middle of the interval, approach a maximum in the middle, and taper away from the middle.
Short-time Fourier transform. The short-time Fourier transform (STFT) 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. [1] In practice, the procedure for computing STFTs is to divide a longer time signal into shorter segments of equal length and ...
Hann function. The Hann function is named after the Austrian meteorologist Julius von Hann. It is a window function used to perform Hann smoothing. [1] The function, with length and amplitude is given by: For digital signal processing, the function is sampled symmetrically (with spacing and amplitude ): which is a sequence of samples, and can ...
Windowed envelope. US Patent 701,839 for a windowed envelope. Modern envelope with a single window for the recipient address. A windowed envelope is a conventional envelope with a transparent (typically PET or BOPS Bi-oriented polystyrene [1] plastic film) window to allow the recipient's address to be printed on the paper contained within.
Spectral leakage. The Fourier transform of a function of time, s (t), is a complex-valued function of frequency, S (f), often referred to as a frequency spectrum. Any linear time-invariant operation on s (t) produces a new spectrum of the form H (f)•S (f), which changes the relative magnitudes and/or angles (phase) of the non-zero values of S ...
A "personal computer" version of Windows is considered to be a version that end-users or OEMs can install on personal computers, including desktop computers, laptops, and workstations. The first five versions of Windows– Windows 1.0, Windows 2.0, Windows 2.1, Windows 3.0, and Windows 3.1 –were all based on MS-DOS, and were aimed at both ...
The drawing of the content is the task of the client. In computing, a windowing system (or window system) is a software suite that manages separately different parts of display screens. [1] It is a type of graphical user interface (GUI) which implements the WIMP (windows, icons, menus, pointer) paradigm for a user interface.