TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
FREQUENCE REPLIEE [1 record]
Record 1 - internal organization data 1996-10-30
Record 1, English
Record 1, Subject field(s)
- Acoustics (Physics)
- Telecommunications Transmission
- Video Technology
Record 1, Main entry term, English
- alias
1, record 1, English, alias
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An ambiguity in the frequency represented by sampled seismic data. Where there are fewer than two samples per cycle, an input signal at one frequency yields the same sample values as, and hence appears to be, another frequency at the output of the system. Half of the frequency of sampling is called the "folding" or "Nyguist" frequency, fN;a frequency larger than this, fN+Y, appears to be the smaller frequency, fN-Y. The two frequencies are "aliases" of each other. 2, record 1, English, - alias
Record 1, Key term(s)
- folding frequency
- Nyquist frequency
Record 1, French
Record 1, Domaine(s)
- Acoustique (Physique)
- Transmission (Télécommunications)
- Vidéotechnique
Record 1, Main entry term, French
- fréquence repliée
1, record 1, French, fr%C3%A9quence%20repli%C3%A9e
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- alias 2, record 1, French, alias
correct, masculine noun
- reflet 1, record 1, French, reflet
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Composante en miroir du signal, résultant d'un échantillonnage à une fréquence inférieure à la fréquence de Nyquist. 3, record 1, French, - fr%C3%A9quence%20repli%C3%A9e
Record number: 1, Textual support number: 1 OBS
L'échantillonnage du signal provoque une ambiguïté sur les fréquences, à cause des phénomènes de repliement du spectre. [...] On peut montrer qu'il n'y a pas de phénomène de repliement si l'on s'arrange pour ne pas avoir de signal à des fréquences supérieures à la fréquence de Nyquist (moitié de la fréquence d'échantillonnage). 4, record 1, French, - fr%C3%A9quence%20repli%C3%A9e
Record 1, Spanish
Record 1, Textual support, Spanish
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