Acoustic panel and acoustic enclosure

摘要: The absorbing acoustic panel of the invention comprises a plurality grooves (2, 2A, 2B, 2C, 2D) at frontal face (la) and (3, 3A, 3B, 3C, 3D) rear face(lb), (lb) determining perforations (4, 4A, 4B) in (1), intersection areas with (2) (la). Said have width from 2 6 mm, depth 5 11 they are spaced distance 9 14 said 8 12 mm that: area determines perforation rate (1) equal or lower than 15%, each having percentage - free surface higher 75%, so that configure sound cavities (5,5B) (1, 1A, 1B, 1C, ID) itself.