TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Sound masking is the popular acoustic process of adding a specific, soft ambient background sound engineered to match the frequency of human speech to reduce noise distractions, protect speech privacy and increase comfort for your staff, patients, customers and listeners.  2, record 1, English, - sound%20masking

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Le masquage sonore repose sur la diffusion homogène d'un son neutre, doux, non dérangeant et non intrusif, qui a pour objectif d'améliorer la confidentialité et le confort acoustique dans les espaces de travail.  1, record 1, French, - masquage%20sonore

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

... the technique of increasing a digital sample's apparent sampling frequency by repeating each digit a number of times so as to be able to filter out unwanted noise.  2, record 2, English, - oversampling

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A random noise which has a continuous spectrum and a varying power spectral density in the frequency band considered.  3, record 3, English, - coloured%20noise

Record number: 3, Textual support number: 1 CONT

Any kind of filtered noise signal can be called "colored noise," which is just to say that it is not a pure white noise.  4, record 3, English, - coloured%20noise

Record number: 3, Textual support number: 1 OBS

coloured noise: designation and definition standardized by ISO in collaboration with the International Electrotechnical Commission.  5, record 3, English, - coloured%20noise

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Bruit aléatoire ayant un spectre continu dont la densité spectrale de puissance varie avec la fréquence dans la bande de fréquences considérée.  1, record 3, French, - bruit%20color%C3%A9

Record number: 3, Textual support number: 1 OBS

bruit coloré : désignation et définition normalisées par l'ISO en collaboration avec la Commission électrotechnique internationale.  2, record 3, French, - bruit%20color%C3%A9

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Ruido errático que tiene un espectro continuo y una densidad espectral de potencia variable en la banda de frecuencias considerada.  2, record 3, Spanish, - ruido%20coloreado

Record number: 3, Textual support number: 1 OBS

ruido coloreado: designación normalizada por ISO en colaboración con la Comisión Electrotécnica Internacional.  3, record 3, Spanish, - ruido%20coloreado

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Electronic jamming in which the carrier wave is modulated by noise, or in which noise at the desired output frequencies is amplified and radiated without a carrier.  1, record 4, English, - noise%20jamming

Record number: 4, Textual support number: 1 OBS

Noise jamming consists of barrage (wide-band), spot (narrow-band) and sweep jamming.  1, record 4, English, - noise%20jamming

Record number: 4, Textual support number: 2 OBS

Although noise jamming normally references frequency bandwidth, other parameters(e. g. spectral content, time duration and centre frequency) may be used.  1, record 4, English, - noise%20jamming

Record number: 4, Textual support number: 3 OBS

noise jamming: designation and definition officially approved by the Joint Terminology Panel.  2, record 4, English, - noise%20jamming

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Brouillage électronique où l'onde porteuse est modulée par du bruit ou où le bruit, aux fréquences de sortie désirées, est amplifié et rayonné sans porteuse.  1, record 4, French, - brouillage%20par%20bruit

Record number: 4, Textual support number: 1 OBS

Le brouillage par bruit englobe le brouillage en barrage (sur large bande), le brouillage sélectif (à bande étroite) et le brouillage par balayage.  1, record 4, French, - brouillage%20par%20bruit

Record number: 4, Textual support number: 2 OBS

Bien que le brouillage par bruit soit généralement décrit par sa largeur de bande de fréquences, on peut aussi utiliser d'autres paramètres (harmoniques, durée, fréquence centrale).  1, record 4, French, - brouillage%20par%20bruit

Record number: 4, Textual support number: 3 OBS

brouillage par bruit; brouilBRUI : désignations et définition uniformisées par le Groupe d'experts en terminologie interarmées.  2, record 4, French, - brouillage%20par%20bruit

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

The possibilities were studied for developing a 20/30 GHz [gigahertz] dual frequency passive radiometer to measure sky noise temperature on a slant path through the atmosphere.  3, record 5, English, - dual%2Dfrequency%20passive%20radiometer

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

High frequency hearing loss is a condition that occurs when the ear becomes unable to hear high-pitched sounds. According to the Hearing Rehab Center, "aging, noise exposure, and medical conditions are the three biggest causes of high frequency hearing loss, all of which damage the sensory cells in the inner ear. "  2, record 6, English, - high%20tone%20hearing%20loss

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

... a multiplex receiver faces the problem of unfiltered signals(noise or interference) outside the frequency of interest falling into the desired channel...  2, record 7, English, - multiplex%20receiver

Record 7,  Textual support,  French

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

Any one of several ionospheric perturbations, resulting from abnormally high ionization/plasma density in the D region of the ionosphere and caused by a solar flare and/or solar particle event (SPE).  3, record 8, English, - sudden%20ionospheric%20disturbance

Record number: 8, Textual support number: 1 CONT

A whole array of sub-classes of SIDs exist, detectable by different techniques at various wavelengths : the short-wave fadeout(SWF), the SPA(sudden phase anomaly), SFD(sudden frequency deviation), SCNA(sudden cosmic noise absorption), SEA(sudden enhancement of atmospherics), etc.  3, record 8, English, - sudden%20ionospheric%20disturbance

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

Pertubación ionosférica de comienzo brusco y de corta duración (generalmente del orden de algunos minutos a una hora) debida a un incremento anormal transitorio de la ionización de las regiones D o E, y que se manifiesta por un desvanecimiento brusco de las ondas radioeléctricas cortas.  1, record 8, Spanish, - perturbaci%C3%B3n%20ionosf%C3%A9rica%20repentina

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

The absolute highest noise level in dB [decibel] over a given period of time with no frequency weighting...  1, record 9, English, - peak%20noise%20level

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

[...] en période «calme» il y avait moins de réactions sommeil (21 par nuit au bruit contre 9 au calme), mais les niveaux de bruit de crête qui les provoquent sont plus bas que ceux qui provoquent ces réactions en environnement bruyant.  1, record 9, French, - niveau%20de%20bruit%20de%20cr%C3%AAte

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 OBS

high frequency noise : term officially approved by the Lexicon Project Committee(New Brunswick).  2, record 10, English, - high%20frequency%20noise

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 OBS

parasites à haute fréquence : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).  3, record 10, French, - parasites%20%C3%A0%20haute%20fr%C3%A9quence

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Low-frequency ship noise sources include propeller noise(cavitation, cavitation modulation at blade passage frequency and harmonics, unsteady propeller blade passage forces), propulsion machinery such as diesel engines, gears, and major auxiliaries such as diesel generators(Ross, 1976).  2, record 11, English, - propeller%20noise

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 DEF

Bruit de fréquence musicale pure, entre 200 et 300 hertz, d'intensité très élevée, produit à partir d'une vitesse d'une dizaine de nœuds, par les vibrations mécaniques des pales d'hélice d'un navire sous l'action des tourbillons.  1, record 11, French, - chant%20d%27h%C3%A9lice

Record number: 11, Textual support number: 1 OBS

Le chant d'hélice peut être éliminé par chanfreinage des pales de l'hélice.  1, record 11, French, - chant%20d%27h%C3%A9lice

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

The random noise having a continuous spectrum and such that the power spectral density is proportional to the reciprocal of the frequency in the frequency band considered.  1, record 12, English, - pink%20noise

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 DEF

Bruit aléatoire ayant un spectre continu dont la densité spectrale de puissance est inversement proportionnelle à la fréquence dans la bande de fréquences considérée.  1, record 12, French, - bruit%20rose

Record 12,  Textual support,  Spanish

Record number: 12, Textual support number: 1 DEF

Ruido cuya densidad espectral de potencia es inversamente proporcional a la frecuencia.  2, record 12, Spanish, - ruido%20rosa

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

A sound in which the sound pressure varies sinusoidally with time.  4, record 13, English, - pure%20tone

Record number: 13, Textual support number: 1 CONT

Few sounds in daily experience are pure tones characterized by a single frequency ...  5, record 13, English, - pure%20tone

Record number: 13, 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 13, English, - pure%20tone

Record number: 13, 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 13, English, - pure%20tone

Record number: 13, Textual support number: 2 OBS

pure tone: term officially approved by the International Civil Aviation Organization (ICAO).  7, record 13, English, - pure%20tone

Record 13,  Textual support,  French

Record number: 13, 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 13, French, - son%20pur

Record number: 13, 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 13, French, - son%20pur

Record number: 13, 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 13, French, - son%20pur

Record number: 13, 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 13, French, - son%20pur

Record 13,  Textual support,  Spanish

Record number: 13, Textual support number: 1 DEF

Oscilación acústica sinusoidal.  1, record 13, Spanish, - sonido%20puro

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

[A noise] containing major components within the low frequency range(20 Hz-250 Hz) of the frequency spectrum.  2, record 14, English, - low%2Dfrequency%20noise

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

Bruit se situant dans la gamme de fréquences comprise entre 20 Hz et 250 Hz.  3, record 14, French, - bruit%20de%20basse%20fr%C3%A9quence

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

The final tuning component of the oscillator, C2 [capacitor] sets the voltage tuning gain of the oscillator. This capacitor should keep the coupling as light as possible while maintaining the required frequency tuning range of the VCO [voltage controlled oscillator] so that the varactor's phase noise contribution is reduced to a minimum. If the coupling is too light, the oscillator may not start under certain conditions.  2, record 15, English, - frequency%20tuning%20range

Record number: 15, Textual support number: 1 OBS

frequency tuning range: term officially approved by the Electronics and Telecommunications Terminology Committee.  3, record 15, English, - frequency%20tuning%20range

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 CONT

La plage de fréquences d’accord : elle est définie pour un oscillateur contrôlé en tension et correspond à la bande passante de l’oscillateur. Si l’oscillateur est variable en fréquence, cette variation peut s’exprimer en pourcentage de la fréquence centrale.  2, record 15, French, - plage%20de%20fr%C3%A9quences%20d%27accord

Record number: 15, Textual support number: 1 OBS

plage de fréquences d'accord : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).  3, record 15, French, - plage%20de%20fr%C3%A9quences%20d%27accord

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 DEF

The area surrounding an NDB [non-directional beacon] within which the strength of the vertical field of the ground wave exceeds the minimum value specified for the geographical area in which the radio beacon is situated. [Definition officially approved by ICAO.]  2, record 16, English, - rated%20coverage

Record number: 16, Textual support number: 1 OBS

The above definition is intended to establish a method of rating radio beacons on the normal coverage to be expected in the absence of sky wave transmission and/or anomalous propagation from the radio beacon concerned or interference from other LF/MF [low frequency/mandatory frequency] facilities, but taking into account the atmospheric noise in the geographical area concerned.  2, record 16, English, - rated%20coverage

Record number: 16, Textual support number: 2 OBS

rated coverage: term standardized by the Glossary for Pilots and Air Traffic Services Personnel Committee and officially approved by the International Civil Aviation Organization (ICAO).  3, record 16, English, - rated%20coverage

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 DEF

Zone entourant un NDB [radiophare non directionnel] dans laquelle l'intensité du champ vertical du radiophare, due aux ondes directes, est supérieure à la valeur minimale spécifiée pour la région géographique dans laquelle le radiophare est situé. [Définition uniformisée par l'OACI.]  2, record 16, French, - couverture%20nominale

Record number: 16, Textual support number: 1 OBS

Le but de cette définition est de fournir une méthode de classification des radiophares d'après la couverture qu'on peut normalement en espérer, en l'absence d'ondes directes, d'anomalies de propagation ou de brouillage provoqué par d'autres installations radioélectriques LF/MF [basse fréquence/fréquence obligatoire], compte tenu cependant des parasites atmosphériques dans la région géographique considérée.  2, record 16, French, - couverture%20nominale

Record number: 16, Textual support number: 2 OBS

couverture minimale : terme normalisé par le Comité sur le Glossaire à l'intention des pilotes et du personnel des services de la circulation aérienne et uniformisé par l'Organisation de l'aviation civile internationale (OACI).  3, record 16, French, - couverture%20nominale

Record 16,  Textual support,  Spanish

Record number: 16, Textual support number: 1 DEF

El área que rodea a un NDB [radiofaro no direccional], dentro de la cual la intensidad del campo vertical de la onda terrestre excede el valor mínimo especificado para el área geográfica en que está situado el radiofaro. [Definición aceptada oficialmente por la OACI.]  1, record 16, Spanish, - cobertura%20nominal

Record number: 16, Textual support number: 1 OBS

Esta definición tiene por objeto establecer un método para clasificar los radiofaros a base de la cobertura normal prevista cuando no haya transmisión ionosférica, o propagación anómala desde el radiofaro en cuestión, ni interferencia ocasionada por otras instalaciones LF/MF, teniendo en cuenta, sin embargo, el ruido atmosférico existente en la zona geográfica en cuestión.  1, record 16, Spanish, - cobertura%20nominal

Record number: 16, Textual support number: 2 OBS

cobertura nominal: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  2, record 16, Spanish, - cobertura%20nominal

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 DEF

A natural or synthetically-produced background sound whose presence generates a filtering effect on other sounds or noises that are considered as annoying.  4, record 17, English, - masking%20sound

Record number: 17, Textual support number: 1 CONT

Masking noise, sometimes called acoustic perfume, is supplied by loudspeakers in some buildings such as open-plan offices to try to mask unwanted sound such as conversation between other individuals at a distance.  3, record 17, English, - masking%20sound

Record number: 17, Textual support number: 2 CONT

Masking by Pure Tones or Narrow Bands of Noise. The importance of the frequency relationship of the masking and masked sounds is illustrated by the masking effect of a pure tone.  5, record 17, English, - masking%20sound

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 DEF

Fond sonore naturel ou artificiel dont la présence crée un effet tamisant sur d'autres bruits ou sons que l'on considère gênants.  3, record 17, French, - son%20masquant

Record number: 17, Textual support number: 1 CONT

Effet de masque : diminution de la sonie d'un son donné (dénommé son masqué), résultant de la présence d'un son différent (dénommé son masquant). [Justification reproduite avec l'autorisation de l'AFNOR.]  4, record 17, French, - son%20masquant

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 DEF

The critical difference between the frequency limits of a band containing the useful frequency components of a signal.  3, record 18, English, - critical%20bandwidth

Record number: 18, Textual support number: 1 CONT

The notion of critical bands, introduced by Fletcher(1940), explains the masking of a narrow band(sinusoidal) signal by a wideband noise source... One can think of a critical band as a frequency selective "channel" of psychoacoustic processing; only noise falling within the critical bandwidth can contribute to the masking of a narrow band signal. The mammalian auditory system consists of a whole series of critical bands, each filtering out a specific portion of the audio spectrum.  4, record 18, English, - critical%20bandwidth

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 DEF

bande critique : Bande de fréquences la plus large au-delà de laquelle certaines caractéristiques de l'audition ne sont plus modifiées (par exemple effet de masque) alors que d'autres sont modifiées (sonie augmentant avec la largeur de bande quand on maintient constante l'intensité acoustique). [Terme et définition normalisés par l'AFNOR et reproduits avec son autorisation.]  3, record 18, French, - bande%20critique

Record number: 18, Textual support number: 1 OBS

Le terme «groupe de fréquences» est parfois utilisé pour désigner la bande critique. [Justification reproduite avec l'autorisation de l'AFNOR.]  3, record 18, French, - bande%20critique

Record 18,  Textual support,  Spanish

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

A random noise whose spectrum level has a negative slope of 10 decibels per decade.  1, record 19, English, - pink%20noise

Record number: 19, Textual support number: 1 CONT

Pink noise is usually created artificially in a special noise generator, and is used to test the audio frequency response in electronic equipment.  2, record 19, English, - pink%20noise

Record number: 19, Textual support number: 1 OBS

pink noise: term standardized by Institute of Electrical and Electronics Engineers and the International Electrotechnical Commission.  2, record 19, English, - pink%20noise

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 CONT

Le bruit rose sert habituellement à mesurer la réponse fréquentielle du matériel audio.  2, record 19, French, - bruit%20rose

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 DEF

The process of modifying the amplitude/frequency response in a recording and reproducing system to produce flat overall characteristics, minimize noise or give an artistic effect.  2, record 20, English, - equalization

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 DEF

Procédé de modification de la courbe de réponse en fréquence d'un appareil d'enregistrement ou de lecture pour corriger des défauts ou créer des effets spéciaux.  2, record 20, French, - %C3%A9galisation

Record 20,  Textual support,  Spanish

Record number: 20, Textual support number: 1 DEF

Corrección de la respuesta en frecuencia de un dispositivo o sistema electrónico.  1, record 20, Spanish, - ecualizaci%C3%B3n

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 CONT

The residual phase noise information is needed because of that specific synthesizer's sensitivity to the phase noise of the external frequency reference, and the fact that its phase noise performance is potentially degraded by using a noisy external frequency reference signal.  1, record 21, English, - frequency%20reference%20signal

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 CONT

Ce signal de référence de fréquence est acquis de façon entrelacée avec le signal d’intérêt en utilisant une seule chaîne d’acquisition. Cette approche exploite la possibilité offerte par les spectromètres modernes de traiter les données en temps réel et ne nécessite pas de modification significative du spectromètre.  1, record 21, French, - signal%20de%20r%C3%A9f%C3%A9rence%20de%20fr%C3%A9quence

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 DEF

A radiation [that] is considered [to be] the remnant of the Big Bang, which cooled down to a temperature of 3 K (-270°C).  2, record 22, English, - fossil%20radiation

Record number: 22, Textual support number: 1 CONT

In 1965, Arno Penzias and Robert Wilson announced the discovery of microwave radiation which uniformly filled the sky and had a blackbody temperature of about 3. 5 K. The pair had been testing a new radio amplifier that was supposed to be exceptionally quiet.... After many attempts to account for all extraneous sources of radio noise, they came to the conclusion that there was a general background of radiation at the radio frequency they were using. After discussions with a group led by Robert Dicke at nearby Princeton University it became clear that they had in fact detected remnant radiation from the origin of the universe.  3, record 22, English, - fossil%20radiation

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 CONT

Vieux de douze milliards d'années puisque s'étant propagé pendant ce laps de temps mais aussi étonnamment jeune puisque témoin de phases fort précoces de l'histoire du monde, ce rayonnement fossile diffus constitue l'une des preuves éclatantes de la justesse de l'idée connue sous le nom de «big bang» selon laquelle notre monde est né dans un état de compression extrême pour entamer une prodigieuse expansion. [...] Pour avoir découvert ce rayonnement fossile en 1963, [...] Penzias et Wilson reçurent le prix Nobel.  2, record 22, French, - rayonnement%20fossile

Record number: 22, Textual support number: 1 PHR

Rayonnement cosmique fossile.  2, record 22, French, - rayonnement%20fossile

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 CONT

Flicker noise tends to be inversely proportional to frequency below about 1 kHz(kilohertz) so that the equivalent noise resistance at 10 Hz(hertz) might be 100 times greater than the shot noise at 1 kHz.  2, record 23, English, - equivalent%20noise%20resistance

Record number: 23, Textual support number: 1 OBS

equivalent noise resistance: term officially approved by the Electronics and Telecommunications Terminology Committee.  3, record 23, English, - equivalent%20noise%20resistance

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 OBS

résistance équivalente de bruit : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).  2, record 23, French, - r%C3%A9sistance%20%C3%A9quivalente%20de%20bruit

Record 23,  Textual support,  Spanish

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 DEF

A power level in dB relative to a noise reference of-90 dBm, as measured with a noise meter, weighted by a special frequency function called C-message weighting that expresses average subjective reaction to interference as a function of frequency.  1, record 24, English, - dBrnC

Record 24,  Textual support,  French

Record number: 24, Textual support number: 1 OBS

dBrn : décibels au-dessus du bruit de référence.  1, record 24, French, - dBrnC

Record number: 24, Textual support number: 2 OBS

C - message weighting : pondération C  2, record 24, French, - dBrnC

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 DEF

Determination of the frequency components that make up a particular noise being studied.  2, record 25, English, - noise%20analysis

Record 25,  Textual support,  French

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 DEF

Narrow pulse jamming swept over a wide frequency range, spot noise being synonymous with spot jamming.  2, record 26, English, - swept%20spot%20noise

Record number: 26, Textual support number: 1 OBS

spot jamming: The jamming of a specific channel or frequency.  3, record 26, English, - swept%20spot%20noise

Record 26,  Textual support,  French

Record number: 26, Textual support number: 1 OBS

brouillage sélectif : Brouillage d'une bande ou d'une fréquence particulière.  2, record 26, French, - brouillage%20s%C3%A9lectif%20par%20balayage

Record number: 26, Textual support number: 2 OBS

brouillage par balayage : Technique consistant à promener une émission de brouillage sur une large bande de fréquence.  2, record 26, French, - brouillage%20s%C3%A9lectif%20par%20balayage

Record 26,  Textual support,  Spanish

Record 27,  Textual support,  English

Record number: 27, Textual support number: 1 DEF

In naval mine warfare, the process of varying the frequency of sound produced by a narrow band noise maker to ensure that the frequency to which the mine will respond is covered.  1, record 27, English, - warble

Record number: 27, Textual support number: 1 OBS

warble: term and definition standardized by NATO in the AAP-6 standard published in 2009, but not included in the 2010 version.  2, record 27, English, - warble

Record 27,  Textual support,  French

Record number: 27, Textual support number: 1 DEF

En guerre des mines sur mer, opération consistant à faire varier la fréquence du son émis par un bruiteur à bande de fréquence étroite, pour être sûr de couvrir la fréquence à laquelle la mine doit répondre.  1, record 27, French, - modulation%20de%20fr%C3%A9quence

Record number: 27, Textual support number: 1 OBS

modulation de fréquence : terme normalisé par l'OTAN dans la norme AAP-6 de 2009, mais non repris dans l'édition de 2010.  2, record 27, French, - modulation%20de%20fr%C3%A9quence

Record 27,  Textual support,  Spanish

Record number: 27, Textual support number: 1 DEF

En guerra naval de minas, proceso de variación de frecuencias del sonido producido en una banda estrecha por un generador de ruido para asegurar que se cubre la frecuencia a la que la mina responde.  1, record 27, Spanish, - variaci%C3%B3n%20de%20la%20frecuencia

Record 28,  Textual support,  English

Record number: 28, Textual support number: 1 CONT

New methods of acoustic imaging are presented that provide images with reduced reverberation noise and images of nonlinear scattering and propagation parameters of the object, and estimation methods of corrections for wave front aberrations produced by spatial variations in the acoustic propagation velocity. The methods find use in a variety of applications such as acoustic imaging of geological structures, SONAR imaging of sub-sea objects, and medical ultrasound imaging. The methods are based on processing of the received signal from transmitted dual frequency band acoustic pulse complexes with overlapping high and low frequency pulses. The high frequency pulse is used for the image reconstruction and the low frequency pulse is used to manipulate the nonlinear scattering and/or propagation properties of the high frequency pulse.  3, record 28, English, - acoustic%20imaging

Record number: 28, Textual support number: 1 OBS

acoustic imaging: term used at Natural Resources Canada - Earth Sciences Sector.  4, record 28, English, - acoustic%20imaging

Record 28,  Textual support,  French

Record number: 28, Textual support number: 1 CONT

[...] un procédé d'imagerie acoustique qui intercepte les ondes sonores propagées par des bruits à la surface d'un objet et mémorise la signature de chaque son dans une banque informatique de signaux.  3, record 28, French, - imagerie%20acoustique

Record number: 28, Textual support number: 1 OBS

imagerie acoustique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.  4, record 28, French, - imagerie%20acoustique

Record number: 28, Textual support number: 1 PHR

Imagerie acoustique haute résolution.  5, record 28, French, - imagerie%20acoustique

Record 28,  Textual support,  Spanish

Record 29,  Textual support,  English

Record number: 29, Textual support number: 1 OBS

--is recommended for all workers who are consistently exposed to noise louder than 85 decibels in frequency bands above 150 cycles per second.  1, record 29, English, - hearing%20protection

Record 29,  Textual support,  French

Record number: 29, Textual support number: 1 OBS

il faut tout d'abord préciser ce que l'on entend par -- et quel est le degré de nuisance admis.  1, record 29, French, - protection%20de%20l%27ou%C3%AFe

Record 29,  Textual support,  Spanish

Record 30,  Textual support,  English

Record number: 30, Textual support number: 1 DEF

In radio transmission, the lowest frequency effective at a specified time for ionospheric propagation of radio waves between any two points, excluding frequencies below several megahertz.  4, record 30, English, - lowest%20useful%20high%20frequency

Record number: 30, Textual support number: 1 OBS

[The lowest usable high frequency] is determined by such factors as absorption, transmitter power, antenna gain, receiver characteristics, type of service, and noise conditions.  4, record 30, English, - lowest%20useful%20high%20frequency

Record number: 30, Textual support number: 2 OBS

The high frequency band is set between 3 to 30 MHz.  5, record 30, English, - lowest%20useful%20high%20frequency

Record 30,  Textual support,  French

Record 30,  Textual support,  Spanish

Record 34,  Textual support,  English

Record number: 34, Textual support number: 1 CONT

Noise Suppression Filter. The patent describes a simple and inexpensive device for filtering undesirable high frequency noise from analog data outputs of a data processing system, which operates in two different modes and switches automatically from one to the other depending on the rate of change of data functions and on data transient amplitude with respect to full scale.  1, record 34, English, - noise%20suppression%20filter

Record 34,  Textual support,  French

Record number: 34, Textual support number: 1 CONT

L'invention concerne un filtre antiparasites à particules permettant de supprimer du bruit non souhaité par augmentation de la résistance spécifique de la ferrite MnZn et l'amélioration d'une caractéristique haute fréquence.  1, record 34, French, - filtre%20antiparasites

Record 34,  Textual support,  Spanish

Record 35,  Textual support,  English

Record number: 35, 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 35, English, - acoustic%20spectrography

Record 35,  Textual support,  French

Record 35,  Textual support,  Spanish

Record number: 35, 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 35, Spanish, - espectrograf%C3%ADa%20ac%C3%BAstica

Record 36,  Textual support,  English

Record number: 36, Textual support number: 1 DEF

An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages.  2, record 36, English, - preamplifier

Record number: 36, Textual support number: 1 CONT

The preferred embodiment of the present aircraft VHF [very high frequency] television receiving antenna system includes a signal processing circuit incorporating solid state switching for selecting antenna coverage, high and low pass filter circuits, passive combining networks providing 180° phase shift necessary for omnidirectional azimuth coverage, low noise preamplifiers for each television band, and other features...  3, record 36, English, - preamplifier

Record 36,  Textual support,  French

Record number: 36, Textual support number: 1 DEF

Circuit électronique ou dispositif utilisé pour la détection et l'amplification des signaux de faible intensité avant qu'ils ne subissent une amplification accrue.  2, record 36, French, - pr%C3%A9amplificateur

Record number: 36, Textual support number: 1 OBS

préamplificateur : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.  3, record 36, French, - pr%C3%A9amplificateur

Record 36,  Textual support,  Spanish

Record 37,  Textual support,  English

Record number: 37, Textual support number: 1 DEF

A measure of the sensitivity of [a] system to areas of low radar backscatter.  4, record 37, English, - noise%20equivalent%20sigma%20naught

Record number: 37, Textual support number: 1 CONT

The Noise Equivalent Sigma Naught field for RADARSAT products(Data Quality Summary Record, byte 1343) is behaving oddly. The value is calculated from the data, as the average noise level within a frequency range a bit outside of the actual backscattered spectrum. Though the noise level might change slightly between scenes, it's expected to remain close to the theoretical-21 dB estimate.  5, record 37, English, - noise%20equivalent%20sigma%20naught

Record number: 37, Textual support number: 1 OBS

noise equivalent sigma nought; noise equivalent sigma naught; noise equivalent sigma zero; NESZ: terms and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  6, record 37, English, - noise%20equivalent%20sigma%20naught

Record 37,  Textual support,  French

Record number: 37, Textual support number: 1 DEF

Mesure de la sensibilité d'un système aux régions de faible rétrodiffusion radar.  3, record 37, French, - %C3%A9quivalent%20de%20bruit%20sigma%2Dz%C3%A9ro

Record number: 37, Textual support number: 1 OBS

NESZ : acronyme spécifique à RADARSAT et uniformisé par le Comité d'uniformisation de la terminologie spatiale (CUTS).  4, record 37, French, - %C3%A9quivalent%20de%20bruit%20sigma%2Dz%C3%A9ro

Record number: 37, Textual support number: 2 OBS

équivalent de bruit sigma-zéro; NESZ : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  5, record 37, French, - %C3%A9quivalent%20de%20bruit%20sigma%2Dz%C3%A9ro

Record 37,  Textual support,  Spanish

Record 38,  Textual support,  English

Record number: 38, Textual support number: 1 DEF

Tube noise, the magnitude of which is inversely proportional to frequency.  1, record 38, English, - noise%201%2Ff

Record 38,  Textual support,  French

Record number: 38, Textual support number: 1 DEF

Bruit de tube, dont l'amplitude est inversement proportionnelle à la fréquence.  1, record 38, French, - bruit%20en%201%2Ff

Record 38,  Textual support,  Spanish

Record 39,  Textual support,  English

Record number: 39, Textual support number: 1 DEF

An instrument that measures very small distances by splitting a light beam into two parts directed over separate paths and then reuniting the beams. The difference in paths lengths is displayed as a light interference pattern, which can be related to the distance moved.  4, record 39, English, - interferometric%20detector

Record number: 39, Textual support number: 1 CONT

Space Based Detectors. Ground based interferometers are limited at the low frequency end by the practical difficulties of operating on Earth : the increasing difficulty of vibration isolation at lower frequencies, the effects of the curvature of the Earth for longer baseline detectors, and the expense of longer vacuum systems. There is also the fundamental difficulty of gravity gradient noise... The obvious solution to these specific difficulties is to use an interferometric detector in space. Interferometer arms may be made orders of magnitude longer than is practical on Earth.  6, record 39, English, - interferometric%20detector

Record 39,  Textual support,  French

Record number: 39, Textual support number: 1 CONT

L'interféromètre est un [...] dispositif qui utilise les interférences. C'est un appareil dans lequel un faisceau lumineux est divisé en deux rayons parallèles. Chaque rayon se déplace alors sur une distance fixe avant qu'il soit rejoint par son jumeau au sein d'un faisceau unique. Si les distances parcourues et les indices de réfraction des deux trajets sont les mêmes, les rayons se recombineront de manière constructive et le faisceau original sera recréé. Si les distances sont différentes, ou si l'indice de réfraction de l'un des deux trajets est modifié, les rayons subiront une interférence destructive et le nouveau faisceau affichera une intensité réduite. Les interféromètres sont extrêmement sensibles aux modifications de la distance ou de l'indice de réfraction des deux trajets. Avec ce dispositif, des écarts de distance inférieurs à une longueur d'onde peuvent être mesurés facilement.  6, record 39, French, - d%C3%A9tecteur%20interf%C3%A9rom%C3%A9trique

Record number: 39, Textual support number: 1 PHR

Interféromètre intégré.  7, record 39, French, - d%C3%A9tecteur%20interf%C3%A9rom%C3%A9trique

Record 39,  Textual support,  Spanish

Record 40,  Textual support,  English

Record number: 40, Textual support number: 1 DEF

[A filter used] to remove random noise while preserving high frequency features(edges).  3, record 40, English, - gamma%20filter

Record number: 40, Textual support number: 1 CONT

The Gamma filter performs gamma map filtering. Gamma filtering is primarily used on radar data to remove high frequency noise(speckle) while preserving high frequency features(edges). The Gamma Map filter was first proposed by Kuan.... Lopes modified the Kuan Map filter by assuming a gamma distributed scene and setting up two thresholds. The gamma filter size ranges from 1 to 11. Different filter sizes will greatly affect the quality of processed images. If the filter is too small, the noise filtering algorithm is not effective. If the filter is too large, subtle details of the image will be lost in the filtering process. A 7x7 filter usually gives the best results.... The GAMMA filter performs spatial filtering on each individual pixel in an image using the grey level values in a square window surrounding each pixel. The dimensions of the filter must be odd, and can be from 3x3 to 11x11 pixels.  2, record 40, English, - gamma%20filter

Record number: 40, Textual support number: 2 CONT

Gamma Filter yields the best smoothing and despeckling. Moreover, it seems to keep the edges without blurring the minimum. Eight textures are applied, based on the cooccurrence matrix. These textures include mean, variance, homogeneity, contrast, dissimilarity, entropy, second moment, and correlation.  4, record 40, English, - gamma%20filter

Record number: 40, Textual support number: 1 OBS

The term MAP stands for Maximum A Posteriori.  5, record 40, English, - gamma%20filter

Record number: 40, Textual support number: 2 OBS

gamma filter: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  5, record 40, English, - gamma%20filter

Record number: 40, Textual support number: 1 PHR

Gamma-gaussian, gamma-beta, gamma-gamma MAP filter.  5, record 40, English, - gamma%20filter

Record 40,  Textual support,  French

Record number: 40, Textual support number: 1 DEF

Filtre utilisé pour enlever les bruits aléatoires des images, tout en préservant les caractéristiques les plus pertinentes (bordures).  2, record 40, French, - filtre%20gamma

Record number: 40, Textual support number: 1 OBS

Pour le lissage et le déchatoiement des images, ce filtre surclasse tous les autres filtres.  2, record 40, French, - filtre%20gamma

Record number: 40, Textual support number: 2 OBS

filtre gamma : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 40, French, - filtre%20gamma

Record 40,  Textual support,  Spanish

Record 41,  Textual support,  English

Record number: 41, Textual support number: 1 DEF

An image consisting of smoothly varying gray values.  3, record 41, English, - low%20frequency%20image

Record number: 41, Textual support number: 1 CONT

Use of a low-pass filter can effectively remove image noise, however, it will deemphasize all high frequency information in an image. Therefore, it is important that you recreate the meaningful high frequency information. This is accomplished by passing a high-pass filter over the low-pass image you created and then adding back a percentage of the high-pass image.  4, record 41, English, - low%20frequency%20image

Record number: 41, Textual support number: 1 OBS

The term "low-pass image" is mostly used by the field specialists.  5, record 41, English, - low%20frequency%20image

Record number: 41, Textual support number: 2 OBS

low frequency image; low-pass image: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  6, record 41, English, - low%20frequency%20image

Record 41,  Textual support,  French

Record number: 41, Textual support number: 1 DEF

Image qui ne contient plus que les harmoniques inférieures d'une transformée de Fourier bidimensionnelle.  3, record 41, French, - image%20de%20basse%20fr%C3%A9quence

Record number: 41, Textual support number: 1 OBS

Image où les dégradés de gris sont uniformisés.  4, record 41, French, - image%20de%20basse%20fr%C3%A9quence

Record number: 41, Textual support number: 2 OBS

Le terme image filtrée passe-bas appartient à la langue de spécialité.  5, record 41, French, - image%20de%20basse%20fr%C3%A9quence

Record number: 41, Textual support number: 3 OBS

image de basse fréquence; image filtrée passe-bas : termes uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  5, record 41, French, - image%20de%20basse%20fr%C3%A9quence

Record 41,  Textual support,  Spanish

Record 42,  Textual support,  English

Record number: 42, Textual support number: 1 CONT

Use of a low-pass filter can effectively remove image noise, however, it will deemphasize all high frequency information in an image. Therefore, it is important that you recreate the meaningful high frequency information. This is accomplished by passing a high-pass filter over the low-pass image you created and then adding back a percentage of the high-pass image.  4, record 42, English, - high%2Dfrequency%20image

Record number: 42, Textual support number: 1 OBS

The term "high-pass image" is mostly used by the field specialists.  5, record 42, English, - high%2Dfrequency%20image

Record number: 42, Textual support number: 2 OBS

high-frequency image; high-pass image: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  5, record 42, English, - high%2Dfrequency%20image

Record 42,  Textual support,  French

Record number: 42, Textual support number: 1 DEF

Image qui ne contient que les harmoniques supérieures d'une transformée de Fourier bidimensionnelle.  2, record 42, French, - image%20de%20haute%20fr%C3%A9quence

Record number: 42, Textual support number: 1 OBS

Le terme «image filtrée passe-haut» appartient à la langue de spécialité.  3, record 42, French, - image%20de%20haute%20fr%C3%A9quence

Record number: 42, Textual support number: 2 OBS

image de haute fréquente; image filtrée passe-haut : termes uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 42, French, - image%20de%20haute%20fr%C3%A9quence

Record 42,  Textual support,  Spanish

Record 43,  Textual support,  English

Record number: 43, Textual support number: 1 DEF

A exraneous signal, noise or any other element that disturbs proper reception of the desired signal.  2, record 43, English, - radar%20interference

Record number: 43, Textual support number: 1 CONT

The signal data in the Kobe image was corrupted by a ground-based radar operating in the same frequency band as the JERS-1 sensor. This radar interference caused the streaks of noise that cover the image of the land mass. Other problems that arose in some of the data were the appearance of "ghost images" in the scenes and poor matching between the images.  3, record 43, English, - radar%20interference

Record number: 43, Textual support number: 1 OBS

radar interference : term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  2, record 43, English, - radar%20interference

Record 43,  Textual support,  French

Record number: 43, Textual support number: 1 DEF

Signal, bruit ou tout autre élément semblable qui vient perturber la réception du signal attendu.  2, record 43, French, - interf%C3%A9rence%20radar

Record number: 43, Textual support number: 1 OBS

interférence radar : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 43, French, - interf%C3%A9rence%20radar

Record 43,  Textual support,  Spanish

Record 44,  Textual support,  English

Record number: 44, Textual support number: 1 OBS

For a three-bladed WT, this will be three times the rotational frequency.  1, record 44, English, - blade%20passing%20frequency

Record number: 44, Textual support number: 2 OBS

The blade passing frequency is also expressed in terms of noise frequency.  2, record 44, English, - blade%20passing%20frequency

Record 44,  Textual support,  French

Record number: 44, Textual support number: 1 DEF

Fréquence à laquelle les pales du rotor d'une éolienne effectuent leur rotation.  2, record 44, French, - fr%C3%A9quence%20de%20passage%20des%20pales

Record number: 44, Textual support number: 1 OBS

Dans le cas d'une éolienne tripale, la fréquence de passage correspond à trois fois la fréquence de rotation (rotor). À noter que ces fréquences sont aussi considérées pour le bruit qu'elles engendrent.  2, record 44, French, - fr%C3%A9quence%20de%20passage%20des%20pales

Record 44,  Textual support,  Spanish

Record 45,  Textual support,  English

Record number: 45, Textual support number: 1 CONT

Fairly soon after the introduction of talkies in the late 1920s, the movie industry settled on using an analogue optical soundtrack on the edge of the film to carry the sound. This was read by the projector and converted to an electrical audio signal. This was a very noisy medium, so in the absence of advanced noise reduction technology such as Dolby A(the cinema equivalent of, and precursor to, the Dolby B and C noise reduction systems on compact cassettes), the situation was eased by sharply cutting the treble response(at around 5kHz). The bass was also cut, which accounts for the characteristic pinched sound of old movies. The recommended system of frequency response tailoring was called ’Academy Sound. ’  1, record 45, English, - Academy%20sound

Record number: 45, Textual support number: 1 OBS

Academy aspect ratio: 1.37:1, the aspect ratio for movies used almost exclusively up to the early 1950s.  1, record 45, English, - Academy%20sound

Record 45,  Textual support,  French

Record number: 45, Textual support number: 1 DEF

Son haut perché caractéristique des anciens films parlants qui était le résultat d'un retranchement, sur la partie de la bande portant le signal audio, de certaines fréquences aiguës et basses, afin de réduire les bruits de la bande.  1, record 45, French, - son%20Academy

Record number: 45, Textual support number: 1 OBS

format Academy : [...] format [d'image] (1.37), qui fut le standard du septième art avant le Cinémascope.  2, record 45, French, - son%20Academy

Record 45,  Textual support,  Spanish

Record 46,  Textual support,  English

Record number: 46, Textual support number: 1 DEF

An acoustic unit used to measure the overall loudness level of a noise. A pure tone of frequency 1, 000 cyc/sec at a sound intensity of 1 db is defined as having a loudness level of 1 phon  2, record 46, English, - phon

Record number: 46, Textual support number: 1 OBS

An aircraft engine has a loudness of around 140 phons.  3, record 46, English, - phon

Record 46,  Textual support,  French

Record number: 46, Textual support number: 1 DEF

Unité sans dimension utilisée pour caractériser le niveau d'isosonie d'un son donné.  2, record 46, French, - phone

Record number: 46, Textual support number: 1 OBS

Terme et définition normalisés par l'AFNOR en 1975 et reproduits avec son autorisation.  3, record 46, French, - phone

Record number: 46, Textual support number: 1 CONT

Il faut [...] plus de décibels pour percevoir un bruit de très haute ou de très basse fréquence, qu'un bruit de fréquence moyenne. C'est pourquoi fut inventé le phone, moyen grossier [...] d'analyser ce que ressentent les personnes.  4, record 46, French, - phone

Record 46,  Textual support,  Spanish

Record 47,  Textual support,  English

Record number: 47, Textual support number: 1 CONT

Vibroacoustic Disease(VAD), caused by loud noise(technically known as large pressure amplitude and low frequency [LPALF] noise) can contribute not just to fatigue but also to a whole host of medical problems, such as heart disease, ulcers, seizures, dizziness, and hearing loss.  1, record 47, English, - vibroacoustic%20disease

Record 47,  Textual support,  French

Record number: 47, Textual support number: 1 OBS

maladie vibro-acoustique : Il faut éviter cette tournure qui constitue une hypallage (ce n'est pas la maladie qui est vibro-acoustique).  1, record 47, French, - maladie%20des%20effets%20vibratoires%20du%20son

Record 47,  Textual support,  Spanish

Record 48,  Textual support,  English

Record number: 48, Textual support number: 1 DEF

Noise for which the energy continuously decreases as the frequency increases.  1, record 48, English, - red%20noise

Record 48,  Textual support,  French

Record number: 48, Textual support number: 1 DEF

Bruit dont l'énergie diminue constamment à mesure que la fréquence augmente.  1, record 48, French, - bruit%20rouge

Record 48,  Textual support,  Spanish

Record number: 48, Textual support number: 1 DEF

Ruido en el que la energía disminuye continuamente al aumentar la frecuencia.  1, record 48, Spanish, - ruido%20rojo

Record 49,  Textual support,  English

Record number: 49, Textual support number: 1 CONT

Active signatures(radiated acoustic noise, low frequency electromagnetic, infrared plume, etc.) primarily require source level reductions and appropriate shielding and shaping.  1, record 49, English, - active%20signature

Record 49,  Textual support,  French

Record number: 49, Textual support number: 1 CONT

Quant aux signatures actives (bruit acoustique transmis par rayonnement, électromagnétisme basses fréquences, traînée infrarouge, etc.), elles requièrent surtout une réduction des émissions à la source, un blindage approprié et une reconfiguration de leur forme.  1, record 49, French, - signature%20active

Record 49,  Textual support,  Spanish

Record 50,  Textual support,  English

Record number: 50, Textual support number: 1 CONT

There are various types of emulsion coating used in tape manufacture, all of a ferric oxide or other magnetizable material uniformly applied to the base. Some are designated "standard", as applied to acetate base; some are designated "low noise", having a high signal-to-noise ratio and a wide dynamic frequency range, applied to a polyester base; and some are designated "low print-through", with an absolute minimum of layer-to-layer signal transfer, applied to a polyester base.  3, record 50, English, - low%20print%2Dthrough%20tape

Record number: 50, Textual support number: 2 CONT

New resin binders make possible the production of low-print tape with an output comparable to the best general-purpose tapes. With conventional binders low print-through can only be achieved by sacrificing output.  4, record 50, English, - low%20print%2Dthrough%20tape

Record 50,  Textual support,  French

Record number: 50, Textual support number: 1 OBS

La nouvelle bande AGFA PER 468 : Cette bande destinée aux usages professionnels se classe dans la catégorie des bandes PER 525 et PER 555 utilisées depuis de nombreuses années par les Studios et la Radiodiffusion. Dans ce domaine, la recherche des performances est le but principal, notamment en ce qui concerne le haut niveau, le faible bruit et le faible écho.  2, record 50, French, - ruban%20%C3%A0%20faible%20impr%C3%A9gnation%20magn%C3%A9tique

Record 50,  Textual support,  Spanish

Record 51,  Textual support,  English

Record number: 51, Textual support number: 1 DEF

Undesired sound. By extension, noise is any unwanted disturbance within a useful frequency band....  3, record 51, English, - noise

Record 51,  Textual support,  French

Record number: 51, Textual support number: 1 CONT

Du point de vue du confort acoustique, il est convenu d'appeler bruit tout phénomène sonore indésirable [...]  2, record 51, French, - bruit

Record number: 51, Textual support number: 1 OBS

Le bruit est défini par la gêne qu'il provoque. Cette référence à un critère psychologique indique que le bruit n'a pas d'existence objective; il faut un sujet pour juger si ce qu'il perçoit est désirable ou indésirable, si ce qu'il entend est un son ou un bruit.  2, record 51, French, - bruit

Record 51,  Textual support,  Spanish

Record number: 51, Textual support number: 1 DEF

Sonido que perturba una captación sonora deseada o es sentido como molesto.  1, record 51, Spanish, - ruido