Abstract: An acoustic curtain comprising a panel of sound absorbent material within an envelope formed from polymeric sheets, with means for attaching adjacent panels to one another, and wherein the curtain comprises a magnetic element.

Abstract: There is disclosed an acoustic barrier (40) for use in a pile driving method in which a pile (I0) is driven into the ground 60, the acoustic barrier (40) comprising: an acoustic dampening layer (42); and a magnetic element (36); wherein the acoustic barrier (40) is arranged to be at least partly wrapped around an axial portion of the pile (I0) so that the acoustic dampening layer (42) at least partly surrounds the axial portion of the pile (I0), and wherein the magnetic element (36) is arranged to releasably secure the acoustic barrier (40) to the pile (I0). There is also disclosed a pile driving method comprising wrapping the acoustic barrier (40) around an axial portion of a pile (I0), driving an axial length of the pile (I0) into the ground, and removing or repositioning the acoustic barrier (40). There is also disclosed an acoustic barrier for a pile driving hammer having a support frame which can be detachable attached to the hammer.

Abstract: There is disclosed a flexible acoustic barrier for suspending from a support frame, comprising: a portion of acoustic insulation material and at least one loudspeaker configured to emit an audible sound-masking signal to mask sound from a sound source. There is also disclosed a corresponding method of mitigating noise pollution.