zero crossing

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• Zero crossing — is a commonly used term in electronics, mathematics, and image processing. In mathematical terms, zero crossing basically means the changing of sign (e.g. from positive to negative), that is represented with a crossing of the axis (zero value) in …   Wikipedia

• zero crossing — nulio perėjimas statusas T sritis radioelektronika atitikmenys: angl. zero crossing; zero passage vok. Nulldurchgang, m rus. проход через нуль, m; прохождение через нуль, n pranc. passage par zéro, m …   Radioelektronikos terminų žodynas

• Zero-crossing rate — The zero crossing rate is the rate of sign changes along a signal, i.e., the rate at which the signal changes from positive to negative or back. This feature has been used heavily in both speech recognition and music information retrieval and is… …   Wikipedia

• Zero Crossing Rate — Le Zero Crossing Rate (souvent utilisé sous sa forme abrégée ZCR) est le taux de changement de signe d un signal. Le ZCR a beaucoup été utilisé en reconnaissance de la parole et en Recherche d information musicale. Il est défini par: où s est un… …   Wikipédia en Français

• Zero crossing threshold detector — A zero crossing threshold detector is an electronic circuit that consists of an operational amplifier with an input voltage at its positive input (see circuit diagram). Often used in conjunction with other circuit elements, it usually functions… …   Wikipedia

• zero passage — nulio perėjimas statusas T sritis radioelektronika atitikmenys: angl. zero crossing; zero passage vok. Nulldurchgang, m rus. проход через нуль, m; прохождение через нуль, n pranc. passage par zéro, m …   Radioelektronikos terminų žodynas

• Crossing number (graph theory) — A drawing of the Heawood graph with three crossings. This is the minimum number of crossings among all drawings of this graph, so the graph has crossing number cr(G) = 3. In graph theory, the crossing number cr(G) of a graph G is the… …   Wikipedia

• Crossing number (knot theory) — In the mathematical area of knot theory, the crossing number of a knot is the minimal number of crossings of any diagram of the knot. It is a knot invariant. By way of example, the unknot has crossing number zero, the trefoil knot three and the… …   Wikipedia

• Reconstruction from zero crossings — The problem of reconstruction from zero crossings can be stated as: given the zero crossings of a continuous signal, is it possible to reconstruct the signal (to within a constant factor)? Worded differently, what are the conditions under which a …   Wikipedia

• passage par zéro — nulio perėjimas statusas T sritis radioelektronika atitikmenys: angl. zero crossing; zero passage vok. Nulldurchgang, m rus. проход через нуль, m; прохождение через нуль, n pranc. passage par zéro, m …   Radioelektronikos terminų žodynas

• Evenness of zero — The number 0 is even. There are several ways to determine whether an integer is even or odd, all of which indicate that 0 is an even number: it is a multiple of 2, it is evenly divisible by 2, it is surrounded on both sides by odd integers, and… …   Wikipedia