TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
AMPLITUDE RATIO [14 records]
Record 1 - internal organization data 2019-02-28
Record 1, English
Record 1, Subject field(s)
- Remote Sensing
Record 1, Main entry term, English
- coherent change detection
1, record 1, English, coherent%20change%20detection
correct, NATO, standardized
Record 1, Abbreviations, English
- CCD 2, record 1, English, CCD
correct, NATO, standardized
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
As SAR [synthetic aperture radar] is a coherent imaging system two forms of change detection may be considered, namely incoherent and coherent change detection. Incoherent change detection identifies changes in the mean backscatter power of a scene typically via an average intensity ratio change statistic. Coherent change detection on the other hand, identifies changes in both the amplitude and phase of the transduced imagery using the sample coherence change statistic. 3, record 1, English, - coherent%20change%20detection
Record number: 1, Textual support number: 1 OBS
coherent change detection; CCD: designations standardized by NATO. 4, record 1, English, - coherent%20change%20detection
Record 1, French
Record 1, Domaine(s)
- Télédétection
Record 1, Main entry term, French
- détection de changement cohérent
1, record 1, French, d%C3%A9tection%20de%20changement%20coh%C3%A9rent
correct, feminine noun, NATO, standardized
Record 1, Abbreviations, French
- CCD 2, record 1, French, CCD
correct, feminine noun, NATO, standardized
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
détection de changement cohérent; CCD : désignations normalisées par l'OTAN. 3, record 1, French, - d%C3%A9tection%20de%20changement%20coh%C3%A9rent
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2016-11-14
Record 2, English
Record 2, Subject field(s)
- Electric Currents
Record 2, Main entry term, English
- damping coefficient
1, record 2, English, damping%20coefficient
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A measure of the rate of decrease of amplitude in a damped oscillation. 1, record 2, English, - damping%20coefficient
Record number: 2, Textual support number: 1 CONT
It is equal to the ratio of one amplitude to the next in the same direction. It is also equal to the logarithmic decrement divided by the periodic time of the oscillation. In an electrical resonant circuit the damping coefficient is related to the circuit constants, being given by R/2L where R is the series resistance in the circuit and L is the inductance. 1, record 2, English, - damping%20coefficient
Record 2, French
Record 2, Domaine(s)
- Courants (Électrocinétique)
Record 2, Main entry term, French
- coefficient d'amortissement
1, record 2, French, coefficient%20d%27amortissement
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Corriente eléctrica
Record 2, Main entry term, Spanish
- coeficiente de amortiguación
1, record 2, Spanish, coeficiente%20de%20amortiguaci%C3%B3n
correct, masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 CONT
[El] coeficiente de amortiguación interna [...] es el coeficiente entre un máximo de amplitud y el que le sigue, provenientes de un impulso de excitación. 1, record 2, Spanish, - coeficiente%20de%20amortiguaci%C3%B3n
Record number: 2, Textual support number: 1 PHR
coeficiente de amortiguación interna 1, record 2, Spanish, - coeficiente%20de%20amortiguaci%C3%B3n
Record 3 - internal organization data 2011-09-26
Record 3, English
Record 3, Subject field(s)
- Analytical Chemistry
- Radiological Physics (Theory and Application)
Record 3, Main entry term, English
- energy spectroscopy
1, record 3, English, energy%20spectroscopy
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Energy spectroscopy. For energy analysis the output current pulse from a PMT [photomultiplier tube] or from a semiconductor detector is often applied to a charge-sensitive preamplifier. The preamplifier produces a voltage pulse with a peak amplitude that is proportional to the total charge in the current pulse, which is proportional to the energy absorbed from the incident radiation. Amplifiers and filters are used to expand the range of the peak amplitude and to shape the signal from the preamplifier, a process that maximizes the signal-to-noise ratio for the system. For energy analysis the peak amplitude of the shaped pulse represents the information of interest. Discriminators and single-channel analyzers(SCA) can be used, following the signal shaping system, to determine the presence of certain energies of detected radiation. A discriminator produces an output logic pulse if it's input signal exceeds a preset threshold level. An SCA produces an output logic pulse if the peak amplitude of it's input signal falls within the energy window that is established with two preset threshold levels. 1, record 3, English, - energy%20spectroscopy
Record 3, French
Record 3, Domaine(s)
- Chimie analytique
- Physique radiologique et applications
Record 3, Main entry term, French
- spectroscopie d’énergie
1, record 3, French, spectroscopie%20d%26rsquo%3B%C3%A9nergie
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
[Dans un détecteur fonctionnant en impulsion] La mesure de la hauteur d’impulsion fournit […] l’information énergie puisque celle-ci est proportionnelle aux charges créées dans le détecteur. Ce mode de fonctionnement est utilisé en spectroscopie d’énergie. 1, record 3, French, - spectroscopie%20d%26rsquo%3B%C3%A9nergie
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2007-04-17
Record 4, English
Record 4, Subject field(s)
- Telecommunications Transmission
Record 4, Main entry term, English
- offset quadrature phase shift keying
1, record 4, English, offset%20quadrature%20phase%20shift%20keying
correct
Record 4, Abbreviations, English
- OQPS 1, record 4, English, OQPS
correct
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A form of quadrature phase shift keying where the quadrature component of the signal is offset from the in-phase component by half a symbol period. 1, record 4, English, - offset%20quadrature%20phase%20shift%20keying
Record number: 4, Textual support number: 1 OBS
As a result the amplitude does not cross zero, and this reduces the peak to average ratio. This has advantages for power amplifiers because it reduces the peak to average ratio and as a result it is used in the reverse link for CDMA [code division multiple access] transmissions. 1, record 4, English, - offset%20quadrature%20phase%20shift%20keying
Record 4, Key term(s)
- off-set quadrature phase shift keying
Record 4, French
Record 4, Domaine(s)
- Transmission (Télécommunications)
Record 4, Main entry term, French
- modulation par déplacement de phase quadrivalente decollée
1, record 4, French, modulation%20par%20d%C3%A9placement%20de%20phase%20quadrivalente%20decoll%C3%A9e
proposal, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2001-08-16
Record 5, English
Record 5, Subject field(s)
- General Mechanics (Physics)
- Flight Instruments and Equipment (Aeroindustry)
- Navigation Instruments
Record 5, Main entry term, English
- angular vibration sensitivity
1, record 5, English, angular%20vibration%20sensitivity
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
[Of a gyro] The ratio of the change in output due to angular vibration about a sensor axis divided by the amplitude of the angular vibration causing it. 1, record 5, English, - angular%20vibration%20sensitivity
Record 5, French
Record 5, Domaine(s)
- Mécanique générale (Physique)
- Instruments et équipement de bord (Constructions aéronautiques)
- Instruments de navigation
Record 5, Main entry term, French
- sensibilité aux vibrations angulaires
1, record 5, French, sensibilit%C3%A9%20aux%20vibrations%20angulaires
feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
Influence des vibrations angulaires de l'axe de rotation. 2, record 5, French, - sensibilit%C3%A9%20aux%20vibrations%20angulaires
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1998-09-16
Record 6, English
Record 6, Subject field(s)
- Mechanical Transmission Systems
Record 6, Main entry term, English
- amplitude ratio
1, record 6, English, amplitude%20ratio
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
Ratio of the control flow amplitude to sinusoidal input signal amplitude at a particular frequency, normalised by using a specified flow frequency as datum at the same input signal. 1, record 6, English, - amplitude%20ratio
Record 6, French
Record 6, Domaine(s)
- Transmissions mécaniques
Record 6, Main entry term, French
- rapport d'amplitude
1, record 6, French, rapport%20d%27amplitude
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Rapport de l'amplitude du débit modulé à l'amplitude du signal d'entrée sinusoïdal pour une fréquence particulière; normalement on utilise une basse fréquence définie, comme référence du même signal d'entrée. 1, record 6, French, - rapport%20d%27amplitude
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1993-10-01
Record 7, English
Record 7, Subject field(s)
- Acoustics (Physics)
Record 7, Main entry term, English
- transmissibility
1, record 7, English, transmissibility
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
The non-dimensional ratio of the response amplitude of a system in steady-state forced vibration to the excitation amplitude. The ratio may be one of forces, displacements, velocities or accelerations. 1, record 7, English, - transmissibility
Record 7, French
Record 7, Domaine(s)
- Acoustique (Physique)
Record 7, Main entry term, French
- facteur de transmission
1, record 7, French, facteur%20de%20transmission
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Rapport sans dimension du module de la réponse d'un système en régime stabilisé de vibration forcée au module d'excitation. Ce peut être un rapport de forces, de déplacements, de vitesses ou d'accélérations. 1, record 7, French, - facteur%20de%20transmission
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1991-12-10
Record 8, English
Record 8, Subject field(s)
- Telecommunications
Record 8, Main entry term, English
- ratio detector
1, record 8, English, ratio%20detector
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
A frequency-modulation detector circuit that uses two diodes and requires no limiter at its input; the audio output is determined by the ratio of two developed intermediate-frequency voltages whose relative amplitudes are a function of frequency. 2, record 8, English, - ratio%20detector
Record number: 8, Textual support number: 1 CONT
A ratio detector... is a discriminator operating on the same principle as the Foster-Seely discriminator but less sensitive to amplitude modulation. The coupling circuit and the addition of the primary voltage to the center tap of the secondary may be identical to the corresponding portion of a Foster-Seely discriminator. However, in the ratio detector, the two diodes are connected so that their load voltages are additive rather than subtractive. 3, record 8, English, - ratio%20detector
Record 8, French
Record 8, Domaine(s)
- Télécommunications
Record 8, Main entry term, French
- discriminateur de rapport
1, record 8, French, discriminateur%20de%20rapport
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
- détecteur de rapport 2, record 8, French, d%C3%A9tecteur%20de%20rapport
masculine noun
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Dans les récepteurs combinés modernes, les constructeurs introduisent, pour détecter les signaux de fréquence modulée, un discriminateur plus simple et plus économique que celui de phase : le discriminateur de rapport. Ce montage n'implique pas la présence d'un étage limiteur et permet une solution simple du problème de la commande automatique de sensibilité. 1, record 8, French, - discriminateur%20de%20rapport
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1991-05-21
Record 9, English
Record 9, Subject field(s)
- Television (Radioelectricity)
Record 9, Main entry term, English
- horizontal drive
1, record 9, English, horizontal%20drive
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- H drive 2, record 9, English, H%20drive
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
horizontal-drive control. In an electromagnetically deflected television receiver, the control which adjusts the ratio of the pulse amplitude to the linear portion of the scanning-current wave. 3, record 9, English, - horizontal%20drive
Record 9, French
Record 9, Domaine(s)
- Télévision (Radioélectricité)
Record 9, Main entry term, French
- impulsions horizontales
1, record 9, French, impulsions%20horizontales
correct, feminine noun, plural
Record 9, Abbreviations, French
Record 9, Synonyms, French
- impulsions de déclenchement ligne 1, record 9, French, impulsions%20de%20d%C3%A9clenchement%20ligne
correct, feminine noun, plural
- attaque horizontale 2, record 9, French, attaque%20horizontale
feminine noun
Record 9, Textual support, French
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1990-05-18
Record 10, English
Record 10, Subject field(s)
- Electrical Engineering
Record 10, Main entry term, English
- amplifying vibrograph 1, record 10, English, amplifying%20vibrograph
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
A vibrograph which records curves of greater amplitude than the actual vibration, and with a specified ratio to them. 1, record 10, English, - amplifying%20vibrograph
Record 10, French
Record 10, Domaine(s)
- Électrotechnique
Record 10, Main entry term, French
- vibrographe amplificateur
1, record 10, French, vibrographe%20amplificateur
masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 1986-04-23
Record 11, English
Record 11, Subject field(s)
- Modelling (Mathematics)
- Energy (Physics)
Record 11, Main entry term, English
- logarithmic decrement
1, record 11, English, logarithmic%20decrement
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
Logarithm to base e of the ratio of the amplitude of successive oscillations which are diminishing through energy dissipation. 1, record 11, English, - logarithmic%20decrement
Record 11, French
Record 11, Domaine(s)
- Modélisation (Mathématique)
- Énergie (Physique)
Record 11, Main entry term, French
- décrément logarithmique
1, record 11, French, d%C3%A9cr%C3%A9ment%20logarithmique
correct, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 DEF
[...] logarithme népérien du rapport d'amplitude de deux élongations successives dans le même sens. 1, record 11, French, - d%C3%A9cr%C3%A9ment%20logarithmique
Record number: 11, Textual support number: 1 CONT
On utilise divers modes d'expression de l'amortissement, les plus courants sont : a) le décrément logarithmique [...] b) le taux de décroissance du son. 1, record 11, French, - d%C3%A9cr%C3%A9ment%20logarithmique
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 1985-10-01
Record 12, English
Record 12, Subject field(s)
- Optics
Record 12, Main entry term, English
- amplitude of fluctuation of the luminous intensity
1, record 12, English, amplitude%20of%20fluctuation%20of%20the%20luminous%20intensity
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
Relative amplitude of the periodic fluctuation of luminous intensity as measured by the ratio of the difference between the maximum and the minimum luminous intensity, to the maximum value... 1, record 12, English, - amplitude%20of%20fluctuation%20of%20the%20luminous%20intensity
Record number: 12, Textual support number: 1 CONT
amplitude of fluctuation of the luminous intensity of a source run on alternating current. 1, record 12, English, - amplitude%20of%20fluctuation%20of%20the%20luminous%20intensity
Record 12, French
Record 12, Domaine(s)
- Optique
Record 12, Main entry term, French
- amplitude de fluctuation de l'intensité lumineuse
1, record 12, French, amplitude%20de%20fluctuation%20de%20l%27intensit%C3%A9%20lumineuse
correct, feminine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 DEF
Amplitude relative de la fluctuation périodique de l'intensité lumineuse, mesurée par le rapport de la différence entre le maximum et le minimum de l'intensité lumineuse, à la valeur de ce maximum (...) 1, record 12, French, - amplitude%20de%20fluctuation%20de%20l%27intensit%C3%A9%20lumineuse
Record number: 12, Textual support number: 1 CONT
amplitude de fluctuation de l'intensité lumineuse d'une source alimentée par un courant alternatif (...) 1, record 12, French, - amplitude%20de%20fluctuation%20de%20l%27intensit%C3%A9%20lumineuse
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 1981-01-07
Record 13, English
Record 13, Subject field(s)
- Radioelectricity
- Audio Technology
Record 13, Main entry term, English
- distortion factor
1, record 13, English, distortion%20factor
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
The [DFM] meter indicates the distortion factor, which is the ratio of the rms total distortion to the amplitude of the fundamental frequency, including harmonics. 2, record 13, English, - distortion%20factor
Record number: 13, Textual support number: 1 OBS
A common measurement is total harmonic distortion (thd) where the fundamental of a very low distortion sine-wave test signal is removed by a steep notch filter. The summed harmonics that remain are then measured as a voltage of the fundamental at the required test power of the amplifier. (When measured in this manner the term thd is not really correct since the distortion also has the amplifier noise added to it within the test passband. The correct term is distortion factor). (GRAEL, 1977, p. 326). 3, record 13, English, - distortion%20factor
Record 13, French
Record 13, Domaine(s)
- Radioélectricité
- Électroacoustique
Record 13, Main entry term, French
- taux de distorsion
1, record 13, French, taux%20de%20distorsion
correct
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 CONT
[Dans le Teac AS M50] les taux de distorsion restent très faibles quelle que soit la puissance, et (...) la décroissance des amplitudes dans l'analyse du spectre de distorsion par harmoniques est régulière. 1, record 13, French, - taux%20de%20distorsion
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 1977-11-10
Record 14, English
Record 14, Subject field(s)
- Scientific Measurements and Analyses
- Geophysics
Record 14, Main entry term, English
- Turam method
1, record 14, English, Turam%20method
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 OBS
The Turam method [of electromagnetic exploration differs from the Sundberg method] in that the ratio of field intensities at two points is observed rather than the intensity at a single point. As with the Sundberg method, two frequencies within the 100-to 800-Hz range are employed. A cable several kilometers long is laid out as a source parallel to the expected strike and is grounded at both ends. Measuring coils are read in pairs along lines perpendicular to the cable, the spacing between them generally being about 25 m. In-phase and out-of-phase ratios are observed as well as amplitude ratios and phase-angle differences. 1, record 14, English, - Turam%20method
Record 14, French
Record 14, Domaine(s)
- Mesures et analyse (Sciences)
- Géophysique
Record 14, Main entry term, French
- méthode Turam
1, record 14, French, m%C3%A9thode%20Turam
correct
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 OBS
[Méthode d'exploration géophysique électro-magnétique.] L'unité émettrice est similaire à celle (...) [de la méthode Sundberg] Le récepteur consiste en deux bobines mobiles de matière isolante, séparées l'une de l'autre par une distance fixe et autour desquelles on a enroulé un certain nombre de tours de fil. Ces deux bobines sont reliées entre elles par un système d'amplification, un point d'impédance et des écouteurs. 1, record 14, French, - m%C3%A9thode%20Turam
Record 14, Spanish
Record 14, Textual support, Spanish
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