Patent ID: 8327973

Claim:
A sound control device including an earpiece member for placement in close proximity to an ear canal of a user for attenuating sound, the earpiece member comprising: a non-reticulated polymeric foam material having a plurality of cells defined by interconnected cellular walls of the polymeric foam material and a plurality of pores extending through the cellular walls between adjacent cells to interconnect adjacent cells of the polymeric foam material; wherein the average volume of the cells of the polymeric foam material is between about 8,000 microns 3 to about 8,000,000 microns 3 ; wherein the average diameter of the pores of the polymeric foam material is between about 5 microns to about 50 microns; and wherein a ratio between the average diameter of the pores to an average diameter of the cells is between 0.02 to 0.75.