dither


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Related to dither: dither matrix

dither

[′dith·ər]
(communications)
A technique for representing the entire gray scale of a picture by picture elements with only one of two levels (“white” and “black”), in which a multilevel input image signal is compared with a position-dependent set of thresholds, and picture elements are set to “white” only where the image input signal exceeds the threshold.
(control systems)
A force having a controlled amplitude and frequency, applied continuously to a device driven by a servomotor so that the device is constantly in small-amplitude motion and cannot stick at its null position. Also known as buzz.
References in periodicals archive ?
There is a drawback when the dither current signals are generated as a by-product of low frequency PWM.
Without dither the output of ideal ADC has quantization error
Here Dither builds on earlier criticism to see an opposition between the discourses of Fact and Fantasy in that novel, and he adds interesting details of Dickens's debate with Harriet Martineau over the nature of the factory.
The design incorporates a superimposed dither to reduce friction effects and increase the linearity of the valve.
The dither can be simply removed to receive the benefits of delocalization without any of the dither signal appearing in the data stream.
She will have to deal with reports that there is so much delay and dither over setting up Brexit departments in Whitehall that the whole thing could be off until late 2019 - that's three years away.
HIGH speed rail between London and Birmingham might not be achieved in the 2020s because of "endless dither and delay" by the Government, former transport secretary Lord Adonis warned yesterday.
There are several types of dither (Carbone & Petri, 1994) and usually uniform noise leads to best results, if peak-to-peak value [D.
The operating characteristics of the HR Series include inherent braking, and the ability to eliminate servo dither when in a static position.
Earlier this week Mr Cameron had boasted: "I come back to Parliament more determined than ever to cut through the dither that holds this country back.
Barry has gone to play with top-class internationals because he knew there was little chance of 'The Dither Man' buying anything of quality to improve a very average team.
So if Ford are still dithering about whether we should have a right-hooker here in the UK, I say dither no more.