TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The baseline frequency from which a set of harmonic frequencies is defined.  3, record 1, English, - fundamental%20frequency

Record number: 1, Textual support number: 1 OBS

For equipment, the baseline frequency is the central operating frequency of the device.  3, record 1, English, - fundamental%20frequency

Record number: 1, Textual support number: 2 OBS

fundamental frequency; first harmonic : designations and definition officially approved by the Joint Terminology Panel.  4, record 1, English, - fundamental%20frequency

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Fréquence de référence à partir de laquelle un ensemble de fréquences harmoniques est défini.  3, record 1, French, - fr%C3%A9quence%20fondamentale

Record number: 1, Textual support number: 1 OBS

En ce qui concerne l'équipement, la fréquence de référence est la fréquence de fonctionnement centrale du dispositif.  3, record 1, French, - fr%C3%A9quence%20fondamentale

Record number: 1, Textual support number: 2 OBS

fréquence fondamentale; fréquence de base : désignations et définition uniformisées par le Groupe d'experts en terminologie interarmées.  4, record 1, French, - fr%C3%A9quence%20fondamentale

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Frecuencia cuyo valor es el máximo común divisor de las frecuencias en relación armónica en una oscilación compleja  1, record 1, Spanish, - frecuencia%20fundamental

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

A nonlinear hologram enables to record the amplitude and phase of a waveform by spatially modulating the second order nonlinear coefficient, so that when a pump laser illuminates it, this waveform is reconstructed at the second harmonic frequency.  3, record 2, English, - nonlinear%20hologram

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

[The] spurious [emission], not including harmonic emissions, at the frequencies, or whole multiples thereof, of any oscillations generated to produce the carrier or characteristic frequency of an emission.  1, record 3, English, - frequency%20conversion%20product

Record number: 3, Textual support number: 1 OBS

frequency conversion product: designation usually used in the plural.  2, record 3, English, - frequency%20conversion%20product

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

[Rayonnement non essentiel], ne comprenant pas les rayonnements harmoniques, sur les fréquences ou les multiples entiers de celles-ci, des oscillations utilisées pour produire la fréquence porteuse ou la fréquence caractéristique d'une émission.  1, record 3, French, - produit%20de%20conversion%20de%20fr%C3%A9quence

Record number: 3, Textual support number: 1 OBS

produit de conversion de fréquence : désignation habituellement utilisée au pluriel.  2, record 3, French, - produit%20de%20conversion%20de%20fr%C3%A9quence

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Spurious intermodulation products result from intermodulation between... the oscillations at the carrier, characteristic, or harmonic frequencies of an emission, or the oscillations resulting from the generation of the carrier or characteristic frequency; and... oscillations of the same nature, of one or several other emissions, originating from the same transmitting system or from other transmitters or transmitting systems.  2, record 4, English, - spurious%20intermodulation%20product

Record number: 4, Textual support number: 1 OBS

spurious intermodulation product: designation usually used in the plural.  3, record 4, English, - spurious%20intermodulation%20product

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Les produits d'intermodulation non essentiels résultent de l'intermodulation entre [...] les oscillations sur les fréquences porteuses, ou caractéristiques ou harmoniques d'une émission, ou les oscillations résultant de la production de ces fréquences porteuses ou caractéristiques; et [...] des oscillations de même nature, d'une ou plusieurs autres émissions, en provenance du même ensemble émetteur ou d'émetteurs ou ensembles émetteurs différents.  2, record 4, French, - produit%20d%27intermodulation%20non%20essentiel

Record number: 4, Textual support number: 1 OBS

produit d'intermodulation non essentiel : désignation habituellement utilisée au pluriel.  3, record 4, French, - produit%20d%27intermodulation%20non%20essentiel

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 OBS

Cada componente espectral producido por la intermodulación.  1, record 4, Spanish, - producto%20de%20intermodulaci%C3%B3n

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Nd : glass lasers are usually frequency tripled to the third harmonic at 351 nm in laser fusion devices.  3, record 5, English, - neodymium%20glass%20laser

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

L'interaction non linéaire du rayonnement du laser à verre au néodyme avec un cristal de phosphate dihydrogéné de potassium (KDP) se révéla très efficace [...]  3, record 5, French, - laser%20%C3%A0%20verre%20au%20n%C3%A9odyme

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

[The] emission on a frequency, or frequencies, which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information.  3, record 6, English, - spurious%20emission

Record number: 6, Textual support number: 1 OBS

Spurious emissions include harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products but exclude out-of-band emissions.  3, record 6, English, - spurious%20emission

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Rayonnement sur une ou sur des fréquences situées en dehors de la largeur de bande nécessaire et dont le niveau peut être réduit sans affecter la transmission de l'information correspondante.  1, record 6, French, - rayonnement%20non%20essentiel

Record number: 6, Textual support number: 1 OBS

Ces rayonnements comprennent les rayonnements harmoniques, les rayonnements parasites, les produits d'intermodulation et de conversion de fréquence, à l'exclusion des émissions hors bande.  1, record 6, French, - rayonnement%20non%20essentiel

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

In a system undergoing vibration, a mode of vibration designates the characteristic pattern of nodes and antinodes assumed by the system in which the motion of every particle, for a particular frequency, is simple harmonic(for linear systems) or has corresponding decay patterns.  1, record 7, English, - mode%20of%20vibration

Record number: 7, Textual support number: 1 OBS

Two or more modes may exist concurrently in a multi-degree-of-freedom system.  1, record 7, English, - mode%20of%20vibration

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Dans un système en vibration, un mode de vibration indique la disposition caractéristique des nœuds et des ventres accusée par le système lorsque les mouvements de chacune de ses parties élémentaires, pour une fréquence donnée, sont harmoniques (cas des systèmes linéaires) ou présentent des types de décroissance correspondants.  1, record 7, French, - mode%20de%20vibration

Record number: 7, Textual support number: 2 CONT

Dans un système à plusieurs degrés de liberté, il peut exister simultanément deux ou plusieurs modes de vibration.  1, record 7, French, - mode%20de%20vibration

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

[The] harmonic radar differs from conventional [radars] in that the receiver detects radiation generated by the target at frequencies which are harmonics of the incident radiation frequency.  3, record 8, English, - harmonic%20radar

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

[L'article] présente les caractéristiques d'un radar harmonique utilisé pour étudier le déplacement du carpocapse des pommes […] Le radar émet un signal à 1,8 [gigahertz] et détecte une onde à 3,6 [gigahertz].  2, record 8, French, - radar%20harmonique

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

Pitched instruments are those that have a well-defined pitch or fundamental frequency-in this case, normally the "pitch"(a subjective frequency measure) matches the "fundamental frequency"(an objective frequency measure). For that reason, it is common that both terms be used interchangeably. Most pitched instruments are also harmonic, meaning that their partials... are close to being harmonics... However, some percussion instruments have a defined pitch, but their partials tend to be nonharmonic.  1, record 9, English, - pitched%20instrument

Record 9,  Textual support,  French

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

A sound in which the sound pressure varies sinusoidally with time.  4, record 10, English, - pure%20tone

Record number: 10, Textual support number: 1 CONT

Few sounds in daily experience are pure tones characterized by a single frequency ...  5, record 10, English, - pure%20tone

Record number: 10, Textual support number: 2 CONT

If a loudspeaker cone is made to vibrate with simple harmonic motion at a given frequency,... it gives rise to a sinusoidal disturbance in the atmosphere. This sound is known as a pure tone. Examples of noise sources which contain pure tones include fans, engine exhausts, pumps, compressors, gears, bearings and electric motors.  6, record 10, English, - pure%20tone

Record number: 10, Textual support number: 1 OBS

pure tone: term standardized by the CSA. Material reproduced with the permission of the copyright holder, the Canadian Standards Association (CSA), 178 Rexdale Blvd., Toronto, Ontario, Canada M9W 1R3. However, CSA shall not be responsible for the manner in which the information is presented, nor for any interpretations thereof. This CSA material may not have been updated to reflect amendments subsequently made to the original content. For further information, contact CSA.  7, record 10, English, - pure%20tone

Record number: 10, Textual support number: 2 OBS

pure tone: term officially approved by the International Civil Aviation Organization (ICAO).  7, record 10, English, - pure%20tone

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Son correspondant à une seule vibration acoustique sinusoïdale. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.]  3, record 10, French, - son%20pur

Record number: 10, Textual support number: 1 CONT

Si la variation de pression est une fonction sinusoïdale du temps, on est en présence d'un son pur.  4, record 10, French, - son%20pur

Record number: 10, Textual support number: 1 OBS

On dit qu'un son est pur lorsque l'oscillation des particules se fait suivant une sinusoïde pure, c'est-à-dire lorsqu'elle peut être représentée en totalité en un point en fonction du temps par une sinusoïde [...]  2, record 10, French, - son%20pur

Record number: 10, Textual support number: 2 OBS

son pur : terme normalisé par l'AFNOR et uniformisé par l'Organisation de l'aviation civile internationale (OACI).  5, record 10, French, - son%20pur

Record 10,  Textual support,  Spanish

Record number: 10, Textual support number: 1 DEF

Oscilación acústica sinusoidal.  1, record 10, Spanish, - sonido%20puro

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

The highest average output power into a rated load, regardless of distortion.  2, record 11, English, - maximum%20output

Record number: 11, Textual support number: 1 OBS

In Great Britain, "power capacity" is defined as being that level of power at which waveform clipping begins to develop, while "maximum output power" is defined as "the maximum measured output power(as opposed to "rated output power" :"the power that the manufacturer claims") that the amplifier can deliver continuously to a stated load resistance at a frequency of 1000 Hz without exceeding a specified value of harmonic distortion"(cf. EAAUD, 1972, p. 36, and BSI-3860 : 1965, p. 6). Maximum power output "is commonly taken as the power yield prior to the onset of waveform clipping or when the THD(=total harmonic distortion) is at a specified value".(cf. EAAUD, 1972, p. 13).  4, record 11, English, - maximum%20output

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 DEF

Il est généralement admis qu'il s'agit de la puissance d'un amplificateur dont les caractéristiques maximales sont altérées jusqu'à la limite de l'audible. Ce qui permet malheureusement à quelques constructeurs (d'une oreille à l'autre!) de pouvoir «interpréter».  1, record 11, French, - puissance%20maximale

Record number: 11, Textual support number: 1 OBS

«Puissance maximale» s'emploie en fait avec des nuances différentes selon le contexte, en fonction de critères définis et des dispositifs considérés. Par exemple, «puissance admissible» (q.v.) dans RESON, HS, 1976, p. 186.  1, record 11, French, - puissance%20maximale

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 CONT

3-Phase precision power meter … Analysis of the harmonics … When optimizing a circuit for lowest emission of harmonics, the effects of a modification of the circuitry can be monitored immediately … the phasor(Fresnel)-diagram of each harmonics can be displayed. … the harmonic frequency spectrum of a frequency inverter [can be seen].  1, record 12, English, - Fresnel%20diagram

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Les circuits électriques en régime permanent sinusoïdal. Grandeurs sinusoïdales […] Représentation de Fresnel. Puisque les phaseurs sont des nombres complexes, il est possible de les représenter graphiquement dans le plan complexe sous forme de demi-droites partant de l’origine si et seulement si ils ont la même pulsation. Ce mode de représentation, appelé diagramme de Fresnel, permet de mettre en évidence les déphasages relatifs des différentes grandeurs sinusoïdales et d’effectuer des opérations élémentaires (addition, soustraction).  2, record 12, French, - diagramme%20de%20Fresnel

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

The UVSOR storage ring is a synchrotron radiation light source for studies of molecular science and its related fields. The radio frequency of the ring is 90 MHz [megahertz] and its harmonic number is 16. The pulsed light is supplied with a period of 11 ns, when all buckets of the ring are filled. The storage ring can be operated in the single bunch mode when a longer pulse period is required. In this mode, the period of the pulsed light is 180 ns [nanoseconds], which is the revolution period of the beam in the ring. The single bunch is produced in the booster synchrotron, and it is transferred to only one bucket of the ring.  1, record 13, English, - single%20bunch%20mode

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 CONT

La diffusion nucléaire résonnante est une spectroscopie dans le domaine temporel, contrairement à la SM [spectrométrie Mössbauer], qui est résolue en énergie. Les échelles de temps concernées sont de l’ordre du temps de vie des niveaux Mössbauer (de la nanoseconde à la microseconde), qui sont bien adaptées à la structure temporelle des sources RS [rayonnement synchrotron]. Des «modes de temps» typiques à l’ESRF [Installation européenne de rayonnement synchrotron] sont le mode «simple paquet» et le mode «16 paquets». Dans le mode «simple paquet», l’anneau de stockage est rempli avec un seul «seau» d’électrons, appelé le paquet, avec un courant d’électrons de 20 Ma [milliampères] (4 x 10¹¹ électrons) et un temps de vie d’environ 6 h. La fréquence est de 352 MHz [mégahertz], ce qui définit une fenêtre en temps de 2,84 ms [millisecondes], entre deux paquets successifs.  1, record 13, French, - mode%20simple%20paquet

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

Acoustic spectrography displays the frequency and harmonic spectrum of a voice and visually records noise. The equipment depicts the acoustic signal and enables researchers or physicians to make generalizations about the vocal quality, pitch and loudness.  1, record 14, English, - acoustic%20spectrography

Record 14,  Textual support,  French

Record 14,  Textual support,  Spanish

Record number: 14, Textual support number: 1 CONT

La espectrografía acústica muestra la frecuencia y el espectro armónico de la voz y registra ópticamente el sonido. El equipo describe la señal acústica e informa sobre la calidad vocal, timbre y volumen.  1, record 14, Spanish, - espectrograf%C3%ADa%20ac%C3%BAstica

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 DEF

The effect of an applied oscillation on the frequency of a self-maintained oscillation which results in a displacement of the latter frequency towards the fundamental, harmonic or subharmonic frequency of the applied oscillation.  1, record 15, English, - frequency%20pulling

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 DEF

Variation de la fréquence d'un auto-oscillateur, provoquée par l'action d'une oscillation extérieure périodique, ayant pour effet de rapprocher la fréquence de l'oscillateur d'une fréquence fondamentale, harmonique ou sous-harmonique de l'oscillation extérieure.  1, record 15, French, - entra%C3%AEnement%20de%20fr%C3%A9quence

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 DEF

The acceleration-sensitive torque caused by gimbal unbalance along the spin axis due to non-intersection of the flexure axes.  1, record 16, English, - gimbal%2Dunbalance%20torque

Record number: 16, Textual support number: 1 OBS

Under constant acceleration, it appears as a second harmonic of the rotor spin frequency because of the single-degree-of-freedom of the gimbal relative to the support shaft.  1, record 16, English, - gimbal%2Dunbalance%20torque

Record 16,  Textual support,  French

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 CONT

Deterministic : A type of signal whose spectrum consists of a collection of discrete components, as opposed to a random signal, whose spectrum is spread out or "smeared" in frequency. Some deterministic signals are periodic and their spectra consist of harmonic series. Vibration signatures of machines are in general deterministic, containing one or more harmonic series, but they always have non-deterministic components, such as background noise.  2, record 17, English, - deterministic%20signal

Record 17,  Textual support,  French

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 OBS

Deterministic : A type of signal whose spectrum consists of a collection of discrete components, as opposed to a random signal, whose spectrum is spread out or "smeared" in frequency. Some deterministic signals are periodic, and their spectra consist of harmonic series. Vibration signatures of machines are in general deterministic, containing one or more harmonic series, but they always have non-deterministic components, such as background noise.  2, record 18, English, - deterministic%20signal%20processing

Record 18,  Textual support,  French

Record 18,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 DEF

The absolute magnitude of the difference between a harmonic NFp of the pump frequency Fp and the signal frequency Fs, where n is a positive integer.  1, record 20, English, - difference%20frequency

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 CONT

[...] si deux tensions de fréquences différentes sont simultanément appliquées à une réactance variant en fonction de la tension appliquée, il apparaît dans le système les fréquences somme et différence des deux fréquences appliquées et, dans certaines conditions, [...] , une amplification peut se manifester.  2, record 20, French, - fr%C3%A9quence%20diff%C3%A9rence

Record 20,  Textual support,  Spanish

Record number: 20, Textual support number: 1 DEF

Frecuencia igual a la diferencia entre otras dos.  1, record 20, Spanish, - diferencia%20de%20frecuencia

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 DEF

Frequency which is a multiple of fundamental frequency.  2, record 21, English, - harmonic%20frequency

Record number: 21, Textual support number: 1 OBS

For example, if the fundamental frequency is 50 Hz, second harmonic is 2 x 50 Hz or 100 Hz; third harmonic is 3 x 50 Hz or 150 Hz, and so on.  2, record 21, English, - harmonic%20frequency

Record 21,  Textual support,  French

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 CONT

Those experiments in which an auxiliary tone was made to beat with an aural harmonic prove definitely that the phase-relations among harmonic components of a stimulus are detectable, for otherwise these beats would not occur. A harmonic in the stimulus may reinforce or cancel an aural harmonic. Under the method of ’best beats’ we perceive an alternate reinforcement and cancellation due to a constantly changing phase between the auxiliary tone and the aural harmonic. When, however, the auxiliary tone is identical in frequency with the aural harmonic, no beats are heard; but it can be shown that the auditory experience which occurs neverthelesss depends upon the phase-relation between the auxiliary tone and the aural harmonic.  1, record 22, English, - aural%20harmonic

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 DEF

Harmonique engendré dans l'oreille.  1, record 22, French, - harmonique%20aural

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 DEF

High frequency waves of electrons in the upper atmosphere; high frequency range of electron cyclotron harmonic waves.  1, record 23, English, - upper%2Dhybrid%20resonance%20waves

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 DEF

Ondes d'électrons dans la haute atmosphère.  1, record 23, French, - ondes%20de%20r%C3%A9sonance%20hybrides%20sup%C3%A9rieures

Record 23,  Textual support,  Spanish

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 CONT

Reliable performance of airborne automatic direction-finding equipment(ADF) may be seriously prejudiced if the beacon emission contains modulation by an audio frequency equal or close to the loop switching frequency or its second harmonic.  1, record 24, English, - loop%20switching%20frequency

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 CONT

Le bon fonctionnement des radiogoniomètres automatiques (ADF) de bord peut être sérieusement compromis si l'émission du radiophare comporte une modulation à fréquence acoustique égale à la fréquence de commutation du cadre ou au deuxième harmonique de cette fréquence ou voisine de l'une de ces deux fréquences.  1, record 24, French, - fr%C3%A9quence%20de%20commutation%20du%20cadre

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 DEF

radiation at a frequency, or frequencies, outside the necessary band, the level of which may be reduced without affecting the corresponding transmission of information; spurious radiation includes harmonic radiation, parasitic radiation and unwanted intermodulation products which are remote from the necessary band;...  1, record 25, English, - spurious%20radiation%20of%20a%20radio%20emission

Record 25,  Textual support,  French

Record number: 25, Textual support number: 1 DEF

Rayonnement sur une ou plusieurs fréquences situées hors de la bande nécessaire et dont le niveau peut être réduit sans affecter la transmission de l'information correspondante; les rayonnements harmoniques, les rayonnements parasites et les produits d'intermodulation indésirables qui sont éloignés de la bande nécessaire sont compris dans les rayonnements non essentiels.  1, record 25, French, - rayonnement%20non%20essentiel%20d%27une%20%C3%A9mission%20radio%C3%A9lectrique

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 OBS

The sum of a harmonic NFp of the pump frequency Fp and the signal frequency Fs, where N is a positive integer.  1, record 26, English, - sum%20frequency

Record 26,  Textual support,  French

Record number: 26, Textual support number: 1 OBS

(...) si deux tensions de fréquences différentes sont simultanément appliquées à une réactance variant en fonction de la tension appliquée, il apparaît dans le système les fréquences somme et différence des deux fréquences appliquées (...)  2, record 26, French, - fr%C3%A9quence%20somme

Record number: 26, Textual support number: 2 OBS

L'expression "fréquence somme" figure à la section E-3060-12.  3, record 26, French, - fr%C3%A9quence%20somme

Record 26,  Textual support,  Spanish