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SCHROEDER DIFFUSER [1 record]
Record 1 - internal organization data 2007-01-15
Record 1, English
Record 1, Subject field(s)
- Acoustics (Physics)
- Building Insulation and Acoustical Design
Record 1, Main entry term, English
- Schroeder diffuser
1, record 1, English, Schroeder%20diffuser
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- reflection phase grating diffuser 2, record 1, English, reflection%20phase%20grating%20diffuser
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
[A sound-diffusing] panel [that] scatters sound waves. 3, record 1, English, - Schroeder%20diffuser
Record number: 1, Textual support number: 1 CONT
A Schroeder diffuser is a structure comprising a number of wells of different, carefully chosen depths. 4, record 1, English, - Schroeder%20diffuser
Record number: 1, Textual support number: 2 CONT
[The] Schroeder diffuser ... is a high-performance quadratic residue diffuser that employs a series of 15 wells of specific depths to break up and scatter acoustic energy. 4, record 1, English, - Schroeder%20diffuser
Record number: 1, Textual support number: 1 OBS
As a soundwave strikes the irregular surface, instead of bouncing off it like a mirror, it bounces out of each well at a slightly different time. The result is many small reflections, spread out in both time and space. The frequencies at which such structures operate as diffusers depend upon their dimensions. 3, record 1, English, - Schroeder%20diffuser
Record 1, French
Record 1, Domaine(s)
- Acoustique (Physique)
- Isolation et acoustique architecturale
Record 1, Main entry term, French
- diffuseur de Schroeder
1, record 1, French, diffuseur%20de%20Schroeder
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- diffuseur cellulaire 2, record 1, French, diffuseur%20cellulaire
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Panneau acoustique dispersant les ondes sonores qui est composé de nombreuses cellules de profondeur variable. 3, record 1, French, - diffuseur%20de%20Schroeder
Record number: 1, Textual support number: 1 CONT
Le son émis par une enceinte ou un instrument se propage vers l'auditeur, le dépasse, va heurter une paroi sur laquelle il se réfléchit, avant de revenir directement ou non, vers l'auditeur. La somme son direct + réflexion crée des interférences qui dégradent la qualité du son. Le diffuseur de Schroeder disperse l'énergie dans le temps et l'espace. Les interférences disparaissent et le champ sonore s'élargit. 1, record 1, French, - diffuseur%20de%20Schroeder
Record number: 1, Textual support number: 1 OBS
Lorsqu'une onde sonore frappe la surface irrégulière du panneau, cette dernière, au lieu de rebondir comme sur un miroir, réfléchit hors de chaque cellule dans des intervalles rapprochés. Il en résulte plusieurs petites réflexions sonores, dispersées dans l'espace et le temps. 3, record 1, French, - diffuseur%20de%20Schroeder
Record 1, Spanish
Record 1, Textual support, Spanish
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