Filtre anti-repliement (anti-aliasing). Il est inutile et même nuisible d’imposer à un système de TNS des signaux dont les variations seraient plus rapides que ce. French term or phrase: filtre anti-repliement. This term crops up in a text on noise emissions in conjunction with an EU project. The “filter” is part. The categories of this image should be checked. Check them now! Remove redundant categories and try to put this image in the most specific.

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The Pentax K-3 from Ricoh introduced a unique sensor-based anti-aliasing filter.

Scientific photography and applied imaging. Anti-Aliasing – [ Traduire cette page ] Filter Basics: Often, an anti-aliasing filter is a low-pass filter ; this is not a requirement, however.

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Term search All of ProZ. Vote Promote or demote ideas. An anti-aliasing filter AAF is a filter used before a signal sampler to restrict the bandwidth of a signal to approximately or completely satisfy the sampling theorem over the band of interest.

If the signal is strong enough, it can cause clipping at the analog-to-digital convertereven after filtering. When distortion due to clipping occurs after the anti-aliasing filter, it can create components outside the passband of the anti-aliasing filter; these components can then alias, causing the reproduction of other non- harmonically related frequencies. Close and don’t show again Close.


The user can turn the vibration on or off, selecting anti-aliasing or no anti-aliasing. In the case of optical image sampling, as by image sensors in digital camerasthe anti-aliasing filter is also known as an optical low-pass filter OLPFblur filteror AA filter. The choice of spot separation for such a filter involves a tradeoff among sharpness, aliasing, and fill factor the ratio of the active refracting area of a microlens array to the total contiguous area occupied by the array.

File:Filtre anti repliement.JPG

Because analog filters have relatively high cost and limited performance, relaxing the demands on the analog filter can greatly reduce both aliasing and cost. An anti-aliasing filter is a low-pass filter that accomplishes this. Login to enter a peer comment or grade. You will also have access to many filfre tools and opportunities designed for those who have language-related jobs or are passionate about them.

Le rôle du filtre anti-aliasing

If one desired to sample an FM radio broadcast centered at An alternative method is to use a digital anti-aliasing repliemsnt. Review native language verification applications submitted by your peers. Audio signal processing Digital image processing Speech processing Statistical signal processing. How does one select the right filter? Digital signal processing Linear filters Electronic filter applications Anti-aliasing.

You have native languages that can be verified You can request verification for native languages by completing a simple application that takes only a couple of minutes. French PRO pts in category: Automatic update in A realizable anti-aliasing filter will typically either permit some aliasing to occur or else attenuate some in-band frequencies close to the Nyquist limit. The idea is to use a higher intermediate digital sample rate, so that a nearly ideal digital filter can sharply cut off aliasing near the original low Nyquist frequency and give better phase responsewhile a much simpler analog filter can stop frequencies above the new higher Nyquist frequency.


Digital imaging for photographers Fourth ed. The filter works by micro vibrating the sensor element.

Detection theory Discrete signal Estimation theory Nyquist—Shannon sampling theorem. Anti-aliasing filters are commonly used at the input of digital signal processing system’s analog to digital converter ; similar filters are used as reconstruction filters at the output of such systems, for example in music players.

From Wikipedia, the free encyclopedia. Retrieved from ” https: You can request verification for native languages by completing a simple application that takes only a couple of minutes.

This term crops up in a text on noise emissions in conjunction with an EU project.