Originally Posted by Hugh Jass

I work construction (often operating heavy machinery) and constantly find myself missing calls because the ring-tone wasn't quite loud enough. The temp solution to this is to use a frequency ring-tone, and although I can hear this, so can everyone for 3 square miles when all the sudden five hundred million mhz of whistle noises starts going off. Can something be used to amplify sounds? Even if something were designed to work on rooted phones I know many would pay to be able to increase their ring-tone volume. Please anyone?