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Nyquist–Shannon sampling theorem. The Nyquist–Shannon sampling theorem is an essential principle for digital signal processing linking the frequency range of a signal and the sample rate required to avoid a type of distortion called aliasing. The theorem states that the sample rate must be at least twice the bandwidth of the signal to avoid ...
Renewal of a subscription may be periodic and activated automatically so that the cost of a new period is automatically paid for by a pre-authorized charge to a credit card or a checking account. A common variation of the model in online games and on websites is the freemium model, in which the first tier of content is free. Still, access to ...
In signal processing, the Nyquist rate, named after Harry Nyquist, is a value equal to twice the highest frequency ( bandwidth) of a given function or signal. It has units of samples per unit time, conventionally expressed as samples per second, or hertz (Hz). [ 1] When the signal is sampled at a higher sample rate (see § Critical frequency ...
An automatic renewal clause is used in the insurance and healthcare industries . An automatic renewal clause (also referred to as an evergreen clause), is activated towards the end of the contractual period whereby it automatically renews the terms of an agreement except when the contract is terminated (through mutual agreement or contract breach), or one of the contracting parties has sent a ...
The Hertz–Knudsen equation describes the non- dissociative adsorption of a gas molecule on a surface by expressing the variation of the number of molecules impacting on the surfaces per unit of time as a function of the pressure of the gas and other parameters which characterise both the gas phase molecule and the surface: [ 1][ 2] where ...
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Orthogonality. Conceptually, OFDM is a specialized frequency-division multiplexing (FDM) method, with the additional constraint that all subcarrier signals within a communication channel are orthogonal to one another. In OFDM, the subcarrier frequencies are chosen so that the subcarriers are orthogonal to each other, meaning that crosstalk ...
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