TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PUISSANCE ACOUSTIQUE INSTANTANEE [3 records]

Record 1 2015-03-10

English

Subject field(s)
  • Audio Technology
  • Acoustics (Physics)

French

Domaine(s)
  • Électroacoustique
  • Acoustique (Physique)
DEF

Puissance surfacique acoustique instantanée : quotient de la puissance acoustique instantanée à travers un élément de surface par l'aire de cet élément.

Spanish

Campo(s) temático(s)
  • Electroacústica
  • Acústica (Física)
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Record 2 1999-10-18

English

Subject field(s)
  • Acoustics (Physics)
OBS

The rate of emission of acoustical energy (i.e., sound power) of sources encountered in most noise control work is relatively small. Sound power usually is expressed in watts or in picowatts (millions of a millionth of a watt); 1 picowatt is equal to 10[upperscript -12]. The instantaneous power (the rate at which sound energy is radiated at any instant of time) fluctuates very considerably.

French

Domaine(s)
  • Acoustique (Physique)
CONT

Puissance acoustique instantanée à travers un élément de surface. Produit de la pression acoustique instantanée par le flux de vitesse acoustique à travers l'élément de surface considéré. [Justification reproduite avec l'autorisation de l'AFNOR].

Spanish

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Record 3 1999-09-30

English

Subject field(s)
  • Acoustics (Physics)
  • Telecommunications Transmission
  • Telephony and Microwave Technology
CONT

Speech Detection. If the Voice Activity Detector (VAD) option is active, a speech detector is used to identify periods of silence or idle VF channels to provide further compression in addition to ADPCM. This function is performed by the CDP card. The PCM signal is first passed through a high-pass filter to remove DC bias and 50/60 Hz. components that might disturb the speech or modem detectors. The energy of each sample is measured, and the average speech power is calculated. If the power is greater than -31 dBmO (dBmO equals a digital milliwatt), the signal is recognized as speech. This is a simplification of the VAD function.

French

Domaine(s)
  • Acoustique (Physique)
  • Transmission (Télécommunications)
  • Téléphonie et techniques hyperfréquences
CONT

puissance vocale moyenne. Valeur moyenne, pendant un intervalle de temps donné, des puissances vocales instantanées. [Justification reproduite avec l’autorisation de l’AFNOR.]

OBS

puissance vocale instantanée. Valeur, à un instant considéré, de la puissance acoustique émise par la bouche. [Justification reproduite avec l'autorisation de l'AFNOR]

Spanish

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