### Alpha W Rating

AS2670-2 Rating

Strutt|Criteria|Ratings|Absorption|Alpha_W calculates the weighted absorption alpha_W of the current row on the selected spreadsheet and inserts it into Column D of the current row.

The rating also includes the shape indicators L, M, H indicating an absorption peak at 250 Hz (L); 500 Hz or 1 kHz (M); 2kHz or 4kHz (H)

Reference:

• EN ISO 11654 (1997)