TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
compression ratio [7 records]
Record 1 - internal organization data 2017-04-28
Record 1, English
Record 1, Subject field(s)
- Computer Mathematics
- Codes (Software)
Record 1, Main entry term, English
- compression ratio
1, record 1, English, compression%20ratio
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Relationship of the total bits used to represent the original to the total number of encoded bits. 2, record 1, English, - compression%20ratio
Record number: 1, Textual support number: 2 DEF
The factor by which digital data, such as images and sounds, can be compressed. 3, record 1, English, - compression%20ratio
Record 1, French
Record 1, Domaine(s)
- Mathématiques informatiques
- Codes (Logiciels)
Record 1, Main entry term, French
- facteur de compression
1, record 1, French, facteur%20de%20compression
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- taux de compression 1, record 1, French, taux%20de%20compression
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] la norme de référence JPEG décompose tout d'abord l'image en petits blocs de 8x8 pixels et définit, pour chacun de ces blocs, la fréquence d'apparition d'un même pixel grâce à une transformée en cosinus directe (DCT pour les anglo-saxons) dérivée de la transformation de Fourier. [...] Une deuxième étape quantifie les coefficients de Fourier et opère une dégradation de l'image selon un algorithme propriétaire (non diffusé). Cette dégradation dépend du facteur de compression retenu par l'utilisateur. On admet que, pour un taux de compression compris entre 10 et 20, l'œil ne perçoit pratiquement aucun changement. Au-delà, les différences sont beaucoup plus apparentes. 1, record 1, French, - facteur%20de%20compression
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2017-01-25
Record 2, English
Record 2, Subject field(s)
- Climate-Control Equipment (Motor Vehicles)
- Engines (Motor Vehicles)
- Motors (Machinery)
Record 2, Main entry term, English
- compression ratio
1, record 2, English, compression%20ratio
correct, officially approved
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The ratio of the volume of an engine cylinder before compression as compared to the volume of the same cylinder after compression. 2, record 2, English, - compression%20ratio
Record number: 2, Textual support number: 1 CONT
The difference between the volume inside a cylinder where the piston is at the bottom of its stroke and when it is at the top of its stroke is called the compression ratio. 3, record 2, English, - compression%20ratio
Record number: 2, Textual support number: 2 CONT
For example, if a cylinder volume of 10 in.³ is compressed into 1 in.³, the compression ratio is 10:1. 2, record 2, English, - compression%20ratio
Record number: 2, Textual support number: 1 OBS
compression ratio: term officially approved by the Lexicon Project Committee (New Brunswick). 4, record 2, English, - compression%20ratio
Record 2, French
Record 2, Domaine(s)
- Système de conditionnement de l'air (Véhicules automobiles)
- Moteur (Véhicules automobiles)
- Moteurs mécaniques
Record 2, Main entry term, French
- rapport volumétrique de compression
1, record 2, French, rapport%20volum%C3%A9trique%20de%20compression
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- taux de compression 2, record 2, French, taux%20de%20compression
correct, masculine noun, officially approved
- rapport volumétrique 3, record 2, French, rapport%20volum%C3%A9trique
masculine noun
- rapport de compression 4, record 2, French, rapport%20de%20compression
masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Rapport entre le volume intérieur du cylindre lorsque le piston est au point mort bas et le volume intérieur du cylindre lorsque le piston est au point mort haut. 1, record 2, French, - rapport%20volum%C3%A9trique%20de%20compression
Record number: 2, Textual support number: 1 OBS
taux de compression : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick). 5, record 2, French, - rapport%20volum%C3%A9trique%20de%20compression
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Sistema de acondicionamiento del aire (Vehículos automotores)
- Motores (Vehículos automotores)
- Motores mecánicos
Record 2, Main entry term, Spanish
- grado de compresión
1, record 2, Spanish, grado%20de%20compresi%C3%B3n
masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2005-01-14
Record 3, English
Record 3, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
- Solar Energy
- Wind Energy
- Geothermal Energy
Record 3, Main entry term, English
- compression ratio
1, record 3, English, compression%20ratio
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The ratio of absolute pressure after compression to absolute pressure before compression. 2, record 3, English, - compression%20ratio
Record 3, French
Record 3, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
- Énergie solaire
- Énergie éolienne
- Énergie géothermique
Record 3, Main entry term, French
- taux de compression
1, record 3, French, taux%20de%20compression
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Rapport entre la pression absolue après et avant la compression. 1, record 3, French, - taux%20de%20compression
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2003-10-04
Record 4, English
Record 4, Subject field(s)
- Analytical Chemistry
Record 4, Main entry term, English
- compression ratio 1, record 4, English, compression%20ratio
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, French
Record 4, Domaine(s)
- Chimie analytique
Record 4, Main entry term, French
- rapport de compression
1, record 4, French, rapport%20de%20compression
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Química analítica
Record 4, Main entry term, Spanish
- relación de compresión
1, record 4, Spanish, relaci%C3%B3n%20de%20compresi%C3%B3n
feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2003-01-30
Record 5, English
Record 5, Subject field(s)
- Telecommunications Transmission
- Radio Waves
Record 5, Main entry term, English
- compression ratio
1, record 5, English, compression%20ratio
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
The ratio, generally measured in decibels, of the variation of the mean level of a signal, before and after compression. 2, record 5, English, - compression%20ratio
Record 5, French
Record 5, Domaine(s)
- Transmission (Télécommunications)
- Ondes radioélectriques
Record 5, Main entry term, French
- rapport de compression
1, record 5, French, rapport%20de%20compression
correct
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Rapport, généralement mesuré en décibels, des variations du niveau moyen d'un signal avant et après compression. 1, record 5, French, - rapport%20de%20compression
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Transmisión (Telecomunicaciones)
- Ondas radioeléctricas
Record 5, Main entry term, Spanish
- relación de compresión
1, record 5, Spanish, relaci%C3%B3n%20de%20compresi%C3%B3n
correct, feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Relación, medida generalmente en decibelios, de la variación del nivel medio de una señal, antes y después de la compresión. 2, record 5, Spanish, - relaci%C3%B3n%20de%20compresi%C3%B3n
Record 6 - internal organization data 2002-11-26
Record 6, English
Record 6, Subject field(s)
- Powder Metallurgy
Record 6, Main entry term, English
- compression ratio
1, record 6, English, compression%20ratio
correct, standardized
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
The ratio of the volume of uncompacted powder to the volume of the compact measured after ejection from the die. 1, record 6, English, - compression%20ratio
Record number: 6, Textual support number: 1 OBS
compression ratio: term and definition standardized by ISO. 2, record 6, English, - compression%20ratio
Record 6, French
Record 6, Domaine(s)
- Métallurgie des poudres
Record 6, Main entry term, French
- rapport de compression
1, record 6, French, rapport%20de%20compression
correct, masculine noun, standardized
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Rapport entre le volume d'une poudre non comprimée et le volume du comprimé, mesuré après éjection de la matrice. 1, record 6, French, - rapport%20de%20compression
Record number: 6, Textual support number: 1 OBS
rapport de compression : terme et définition normalisés par l'ISO. 2, record 6, French, - rapport%20de%20compression
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1999-11-30
Record 7, English
Record 7, Subject field(s)
- Air Conditioning and Heating
- Compressors
Record 7, Main entry term, English
- ratio of compression
1, record 7, English, ratio%20of%20compression
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- compression ratio 2, record 7, English, compression%20ratio
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
Ratio of absolute pressures after and before compression. 1, record 7, English, - ratio%20of%20compression
Record 7, Key term(s)
- pressure ratio
Record 7, French
Record 7, Domaine(s)
- Conditionnement de l'air et chauffage
- Compresseurs
Record 7, Main entry term, French
- taux de compression
1, record 7, French, taux%20de%20compression
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- rapport de pressions 2, record 7, French, rapport%20de%20pressions
correct, masculine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Rapport de la pression de refoulement, exprimée en valeur absolue [...], à la pression d'aspiration, également en valeur absolue. 1, record 7, French, - taux%20de%20compression
Record 7, Spanish
Record 7, Textual support, Spanish
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