APPARATUS INCORPORATING AN ADSORBENT MATERIAL, AND METHODS OF MAKING SAME

Apparatus for an acoustic transducer system including a cavity having a substantially enclosed air volume. The apparatus comprising: at least one skeleton member wherein the skeleton member as a predetermined configuration comprising: a plurality of hollows formed within; and the at least one skeleton member has inner surfaces of the plurality of hollows provided with adsorbent material, wherein the apparatus is arranged for compensating for pressure changes within said substantially enclosed air volume of said cavity by adsorbing gas molecules when the pressure increases and by releasing gas molecules when the pressure decreases within said substantially enclosed air volume. The at least one skeleton member is substantially spheroidal in shape.