TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ACOUSTIC SHADOW [2 records]
Record 1 - internal organization data 2019-07-08
Record 1, English
Record 1, Subject field(s)
- Ultrasonography
Record 1, Main entry term, English
- acoustic shadow
1, record 1, English, acoustic%20shadow
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- shadow cone 2, record 1, English, shadow%20cone
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
If the sound encounters air or bone ... the impedance mismatch is so great that almost all of the acoustic energy is reflected and nearly none is transmitted. This creates an acoustic shadow that obscures structures located deep to the air or bone. 1, record 1, English, - acoustic%20shadow
Record 1, French
Record 1, Domaine(s)
- Ultrasonographie
Record 1, Main entry term, French
- cône d'ombre
1, record 1, French, c%C3%B4ne%20d%27ombre
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- ombre acoustique 2, record 1, French, ombre%20acoustique
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] les cônes d'ombre apparaissent quand les ultrasons rencontrent une structure plus atténuante que les structures voisines; dans ce cas (os, calcifications, air), il n'y a plus d'échos émis en arrière de la structure, d'où la présence d'une zone anéchogène [...] 3, record 1, French, - c%C3%B4ne%20d%27ombre
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Ecografía
Record 1, Main entry term, Spanish
- sombra acústica
1, record 1, Spanish, sombra%20ac%C3%BAstica
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1986-05-15
Record 2, English
Record 2, Subject field(s)
- Building Insulation and Acoustical Design
- Acoustics (Physics)
Record 2, Main entry term, English
- acoustic shadow
1, record 2, English, acoustic%20shadow
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A region immediately behind an object placed in the path of a sound wave whose wavelength is much smaller than the object, in which the initial sound wave is cut off by the object and the sound intensity is determined by the diffraction and interference of sound waves bent around the obstacle. 1, record 2, English, - acoustic%20shadow
Record 2, French
Record 2, Domaine(s)
- Isolation et acoustique architecturale
- Acoustique (Physique)
Record 2, Main entry term, French
- ombre acoustique
1, record 2, French, ombre%20acoustique
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Lorsqu'un son frappe une surface et qu'il se réfléchit, il se produit (...) un phénomène d'écho. (...) De l'autre côté de la surface réfléchissante, il peut se produire une véritable "ombre" acoustique; un auditeur qui se trouve séparé d'une source sonore par un obstacle peut donc ne pas entendre cette source si l'obstacle est assez grand (...) 2, record 2, French, - ombre%20acoustique
Record number: 2, Textual support number: 2 CONT
(...) les méthodes de tracés de rayons acoustiques (...) permettraient d'appréhender la distribution de l'énergie sonore dans les salles et ainsi d'éviter l'existence de zones de focalisation, d'ombres acoustiques ou d'échos multiples (...) 3, record 2, French, - ombre%20acoustique
Record 2, Spanish
Record 2, Textual support, Spanish
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