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 — 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
The Crossing — (العبور) is a term used in Egypt to refer to the west to east crossing of the Suez Canal by the Egyptian army at the start of the Yom Kippur War in 1973. It is also a term used by some Israelis to refer to the east to west counter attack crossing … Wikipedia
ZCR — 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… … Wikipédia en Français
Pitch detection algorithm — A pitch detection algorithm (PDA) is an algorithm designed to estimate the pitch or fundamental frequency of a quasiperiodic or virtually periodic signal, usually a digital recording of speech or a musical note or tone. This can be done in the… … Wikipedia
List of mathematics articles (Z) — NOTOC Z Z channel (information theory) Z factor Z function Z group Z matrix (mathematics) Z notation Z order (curve) Z test Z transform Z* theorem Zadoff–Chu sequence Zahorski theorem Zakai equation Zakharov–Schulman system Zakharov system ZAMM… … Wikipedia
Acoustic fingerprint — For acoustic emissions of ships and submarines, see Acoustic signature. An acoustic fingerprint is a condensed digital summary, deterministically generated from an audio signal, that can be used to identify an audio sample or quickly locate… … Wikipedia
Rayleigh fading — is a statistical model for the effect of a propagation environment on a radio signal, such as that used by wireless devices.Rayleigh fading models assume that the magnitude of a signal that has passed through such a transmission medium (also… … Wikipedia
Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… … Universalium
Operational amplifier — A Signetics μa741 operational amplifier, one of the most successful op amps. An operational amplifier ( op amp ) is a DC coupled high gain electronic voltage amplifier with a differential input and, usually, a single ended output.[1] An op amp… … Wikipedia
