# spectral ratio

spectral ratio
спектральное отношение

English-Russian dictionary of chemistre. 2014.

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• Spectral efficiency — Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is… …   Wikipedia

• Spectral concentration problem — The spectral concentration problem in Fourier analysis refers to finding a time sequence whose discrete Fourier transform is maximally localized on a given frequency interval, as measured by the spectral concentration.pectral concentrationThe… …   Wikipedia

• Spectral Tarsier — ] status = VU status system = iucn3.1 status ref =IUCN2006 | assessors = Eudey, A. Members of the Primate Specialist Group | year = 2000 | title = Tarsius spectrum | id = 21491 | downloaded = 2006 09 19] image width = 201px regnum = Animalia… …   Wikipedia

• Spectral edge frequency — The spectral edge frequency or SEF is a measure used in signal processing. It is usually expressed as SEF x , which stands for the frequency below which x percent of the total power of a given signal are located. (typically x is in the range 75… …   Wikipedia

• Spectral Reflectance —   The ratio of energy reflected from a surface in a given waveband to the energy incident in that waveband …   Energy terms

• Noise spectral density — In communications, noise spectral density No is the noise power per unit of bandwidth; that is, it is the power spectral density of the noise. It has dimension of power/frequency (see dimensional analysis), whose SI coherent unit is watts per… …   Wikipedia

• Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… …   Wikipedia

• Carrier-to-noise ratio — In telecommunications, the carrier to noise ratio, often written CNR or C/N , is the signal to noise ratio (SNR) of a modulated signal. The CNR is the quotient between the average received modulated carrier power C and the average received noise… …   Wikipedia

• Odds ratio — The odds ratio [1][2][3] is a measure of effect size, describing the strength of association or non independence between two binary data values. It is used as a descriptive statistic, and plays an important role in logistic regression. Unlike… …   Wikipedia

• Depolarization ratio — For other uses, see Depolarization (disambiguation). In Raman spectroscopy, the depolarization ratio is the intensity ratio between the perpendicular component and the parallel component of the Raman scattered light.[1] Early work in this field… …   Wikipedia

• Contrast-to-noise ratio — Haze over Kuala Lumpur. Contrast to noise ratio (CNR) is a measure used to determine image quality. CNR is similar to the metric, signal to noise ratio (SNR), but subtracts off a term before taking the ratio. This is important when there is a… …   Wikipedia

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