A sound damping filter for a hearing protector placeable in the auditory duct of a person, said sound damping filter comprising a sound damping canal, wherein said sound damping canal comprises a first tube part connected to a second tube part, wherein said first tube part provides for a sound inlet opening and wherein said second tube part provides for a sound outlet opening such that a sound passage extends in said sound damping canal from said sound inlet opening to said sound outlet opening, wherein said first tube part comprises at least one membrane providing a sound damping function, and wherein said sound inlet opening is larger than said sound outlet opening.