Swirl guiding acoustic device with an internal coaxially integrated swirl guide structure

A coaxially integrated swirl guiding acoustic device has an elongated annular housing with radially spaced outer and inner walls. At least one acoustic resonator chamber is enclosed between the outer and inner walls. A swirl guiding structure is coaxially arranged within an open interior of the housing (20) and secured to the inner wall (26) of the housing, the structure having at least one swirl guiding element configured to modify swirl characteristics of air flowing through the device.