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MODULATEUR LINEAIRE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2008-07-30

English

Subject field(s)
  • Semiconductors (Electronics)
OBS

modulator diode: term standardized by the International Electrotechnical Commission (IEC).

French

Domaine(s)
  • Semi-conducteurs (Électronique)
DEF

Diode à semiconducteur utilisée comme élément non linéaire dans un modulateur d’amplitude.

OBS

diode modulatrice : terme normalisé par la Commission électrotechnique internationale (CEI).

Spanish

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Record 2 2003-10-20

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Audio Technology
CONT

Super Audio CD (SACD) is a technology for high resolution multi-channel digital audio recordings proposed by Sony and Philips. SACD albums must contain one layer with the "Direct Stream Digital" encoding format which requires a SACD capable player. "Direct Stream Digital" encoding will be able to provide a frequency response from DC to 100 kHz with a dynamic range of 120 dB. Multichannel SACD players have 6 outputs and can play 5.1 or 6 channel audio. SACD albums can optionally contain a second layer encoded with the CD-format (PCM at 44.1-kHz/16-bit) in stereo allowing compatibility with existing CD players.

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Électroacoustique
DEF

Nouveau format d’encodage développé par Sony et Philips utilisé notamment sur le SACD.

OBS

La technologie DSD est basée sur une méthode de numérisation appelée Pulse Width Modulation(PWM), un codage prônant la simplicité du phrasé numérique compensé par une très haute fréquence d’échantillonnage. En travaillant à la fréquence de 2. 822 MHz(64 fois plus élevée que celle du CD-audio), le modulateur Delta Sigma chargé de traduire la courbe de tension analogique en un signal numérique binaire prélève en continu quelques 2. 822. 400 échantillons par seconde sur la source linéaire.

Spanish

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Record 3 2002-01-24

English

Subject field(s)
  • Telecommunications Switching
  • Electronic Devices
  • Television (Radioelectricity)
  • Optics
DEF

A modulator in which the change in the modulated characteristic of the carrier signal is proportional to the value of the modulating signal over the range of the audio-frequency band.

French

Domaine(s)
  • Commutation (Télécommunications)
  • Dispositifs électroniques
  • Télévision (Radioélectricité)
  • Optique

Spanish

Campo(s) temático(s)
  • Conmutación (Telecomunicaciones)
  • Dispositivos electrónicos
  • Televisión (Radioelectricidad)
  • Óptica
DEF

Modulador en el que el cambio en la característica modulada de la señal portadora es proporcional al valor de la señal moduladora sobre el margen de la banda de audiofrecuencia.

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