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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

The absorption coefficient of a material is ideally the fraction of the randomly incident sound power which is absorbed, or otherwise not reflected. It can be determined in two main ways, and there are often variations in the results depending upon the method of measurement chosen. It is standard practice to measure the coefficient at the preferred octave frequencies over the range of at least 125 Hz - 4 kHz. For the purposes of architectural design, the Sabine coefficient (calculated from reverberation chamber measurement) is preferred. Interestingly, some absorbent materials are found to have a Sabine coefficient in excess of unity at higher frequencies. This is due to edge effects and, when this occurs, the value can be taken as 1.0.  4, record 1, English, - Sabine%20absorption%20coefficient

Record number: 1, Textual support number: 1 OBS

Reverberation Time. This formula was developed by W.C. Sabin in the late 19th century. The Sabin unit is a measurement of absorption in the range 0 to 1, an absorption coefficient of 0 indicates a material that reflects sound totally, and a coefficient of 1, a material that adsorbs sound totally.  3, record 1, English, - Sabine%20absorption%20coefficient

Record number: 1, Textual support number: 2 OBS

The name "Sabin" (written without an "e") is probably misspelled.  5, record 1, English, - Sabine%20absorption%20coefficient

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Rapport de l'aire d'absorption attribuée à une surface en utilisant la formule de Sabine à l'aire de cette surface. [Terme et définition normalisés par l'AFNOR et reproduits avec son autorisation.]  4, record 1, French, - facteur%20de%20Sabine

Record number: 1, Textual support number: 1 CONT

L'absorption à une fréquence déterminée est définie par le facteur ou coefficient d'absorption qui est le rapport de l'énergie sonore absorbée par une surface S du matériau à l'énergie qui vient la frapper. Il ne faut pas confondre ce coefficient d'absorption avec le coefficient de Sabine obtenu par des mesures d'absorption faites en salles réverbérantes.  5, record 1, French, - facteur%20de%20Sabine

Record number: 1, Textual support number: 1 OBS

Le terme «coefficient de Sabine» est déconseillé.  4, record 1, French, - facteur%20de%20Sabine

Record 1,  Textual support,  Spanish