dither

23:07 Oct 29, 2023

English to French translations [PRO]
Tech/Engineering - Patents / traitement de signaux

English term or phrase: dither

In an unclaimed aspect, a transmission system comprises an encoder comprising a lossless bandsplitter and a decoder comprising a lossless bandjoiner,
wherein the bandsplitter and bandjoiner each contain an allpass filter comprising a dithered quantiser,
wherein the transmission system also provides synchronised dither for a quantiser in the bandsplitter and a quantiser in the bandjoiner.
In this way, the quantisations in the bandsplitter benefit from the use of dither whilst the synchronisation preserves the lossless behaviour of the combined system. Those quantisations are audible if the bandsplit signal is listened to directly.

The filters were second order with coefficients k1=0.8365625224 and k2=0.09327361235 as given earlier, and their respective quantisers were dithered with the same ‘RPDF’ dither having a rectangular probability density function and a peak-to-peak amplitude equal to one 10 quantisation step.

sylem
Tunisia

Summary of answers provided

3 +1

dither / dépolissage

Bourth

bruit de dispersion (dither)

Jennifer Levey

diffuseur d'erreur ou diffuseur

Monjengue Nkoum Josué Arno

Answers

1 hr confidence:

peer agreement (net): +1

dither / dépolissage

Explanation:
Vous trouverez d'autres possibilités ici - https://fr.wikipedia.org/wiki/Dither_(audio) - mais notez bien que, selon l'article, " Aucune expression n'est aussi simple et universellement employée que l'anglais dither".

Confiance moyenne car je n'y comprends rien et il est toujours possible que dither ait un autre sens dans votre texte.

Bourth
France
Local time: 14:09
Native speaker of:

English
PRO pts in category: 7

2 hrs confidence:

bruit de dispersion (dither)

Explanation:
'dither' involves the addition of low-level random noise - bruit de dispersion - to an audio signal prior to analogue to digital conversion, as a means of reducing the subjective impairment caused by the converter.
The process is explained in French here:
https://fiternet.fr/le-dithering/
and
http://pagniez.chez-alice.fr/spdif_master/spdif_numerique2.h...

The English term 'dither' is very often used in French texts.

Jennifer Levey
Chile
Local time: 08:09
Native speaker of:

English
PRO pts in category: 24

5 hrs confidence:

diffuseur d'erreur ou diffuseur

Explanation:
dither - est une technique d'amélioration du rendu des images infographiques et de signaux audio ou autres types d'ondes en cas de diminution du nombre de codes de couleurs ou d'entités de porteuses de signaux. L'outil utilisé à cette effet est un diffuseur d'erreur - a dither en anglais

Monjengue Nkoum Josué Arno
Cameroon
Local time: 13:09
Native speaker of:

French

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