One way to retain contaminants out is to block the apertures that permit sound waves out and in. But prioritizing sealing about seem can compromise functions like voice recognition or sound cancellation.rnttttttrntttttttrntttttttPhonernttttttrntttttrntttttttttrntrn t t rn$(functionality() rn t$("#onlinebox-open up").simply click(purpose() rn $("#on