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PREACCENTUATION-DESACCENTUATION [1 record]
Record 1 - internal organization data 2002-08-14
Record 1, English
Record 1, Subject field(s)
- Audio Technology
- Computers and Calculators
- Telecommunications Transmission
Record 1, Main entry term, English
- pre-emphasis/de-emphasis
1, record 1, English, pre%2Demphasis%2Fde%2Demphasis
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A combination of two inverse operations intended to improve transmission, e.g. in respect of the signal-to-noise ratio. 2, record 1, English, - pre%2Demphasis%2Fde%2Demphasis
Record number: 1, Textual support number: 1 OBS
Pre-emphasis consists of a modification in the gain/frequency characteristic of a channel normally resulting in an increase of the relative amplitudes of higher frequency signal components. De-emphasis, which is applied at the output of a channel, is the inverse operation to pre-emphasis, with which it has to be associated in order to restore the original relationship of the signal components. 2, record 1, English, - pre%2Demphasis%2Fde%2Demphasis
Record 1, French
Record 1, Domaine(s)
- Électroacoustique
- Ordinateurs et calculateurs
- Transmission (Télécommunications)
Record 1, Main entry term, French
- préaccentuation-désaccentuation
1, record 1, French, pr%C3%A9accentuation%2Dd%C3%A9saccentuation
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Ensemble de deux opérations inverses dont le but est d'améliorer la transmission, notamment en ce qui concerne l'écart entre le signal et le bruit. 1, record 1, French, - pr%C3%A9accentuation%2Dd%C3%A9saccentuation
Record number: 1, Textual support number: 1 OBS
La préaccentuation consiste à modifier la caractéristique du gain en fonction de la fréquence d'une voie en recherchant, d'ordinaire, à augmenter les amplitudes relatives de celles des composantes du signal dont les fréquences sont les plus élevées. La désaccentuation, effectuée à la sortie de la voie, est l'opération inverse de la préaccentuation et doit être combinée avec celle-ci pour reconstituer la forme primitive des signaux. 1, record 1, French, - pr%C3%A9accentuation%2Dd%C3%A9saccentuation
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Electroacústica
- Computadoras y calculadoras
- Transmisión (Telecomunicaciones)
Record 1, Main entry term, Spanish
- preacentuación/desacentuación
1, record 1, Spanish, preacentuaci%C3%B3n%2Fdesacentuaci%C3%B3n
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Combinación de dos operaciones inversas cuya finalidad es la de mejorar la transmisión, por ejemplo con respecto a la relación señal/ruido. 1, record 1, Spanish, - preacentuaci%C3%B3n%2Fdesacentuaci%C3%B3n
Record number: 1, Textual support number: 1 OBS
La preacentuación consiste en una modificación en la característica de la ganancia/frecuencia de un canal, dando normalmente como resultado un incremento de las amplitudes relativas de los componentes de la señal de frecuencia más alta. La desacentuación, que se aplica a la salida de un canal, es la operación inversa a la preacentuación, con la que debe estar asociada con el fin de restablecer la relación original de los componentes de la señal. 1, record 1, Spanish, - preacentuaci%C3%B3n%2Fdesacentuaci%C3%B3n
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