Patent ID: 8469146

Claim:
An acoustic treatment panel comprising: at least two portions with edges ( 64 ) that are spaced in at least one direction and with, from outside to inside, a first acoustically resistive layer ( 54 ), at least one first alveolar structure ( 56 ), and a reflective layer ( 58 ), and, a block ( 66 ) that is inserted between the two edges ( 64 ) that comprises, from the outside to the inside, a second acoustically resistive layer ( 68 ) that connects to said first acoustically resistive layer ( 54 ) of the two portions ( 56 ) and at least one alveolar second structure ( 70 ), wherein the block ( 66 ) further comprises at least one sector of alveolar structures with sloped pipes ( 74 ), the sloped pipes ( 74 ) having a first height less than a second height of the first alveolar structure ( 56 ), wherein said sloped pipes ( 74 ) are sloped in a direction such that first ends of the sloped pipes are close to one of the edges of the portions at the first acoustically resistive layer ( 54 ), and opposite second ends of said sloped pipes are moved away from said one of the edges and the reflective layer ( 58 ) of the two portions in such a way as to house connecting means between said block ( 66 ) and said panel.