1. A method for communicating information in an environment that interferes with audible speech, the method comprising: choosing at least a first sub-audible word or phrase (SAWP) and a second SAWP to be first and second representational SAWPs (Rep-SAWPs), respectively, where each Rep-SAWP is chosen to provide optimal likelihood of recognition of the transmitted SAWP signal in an ambient environment, receiving at least one SAWP, from among the first SAWP and the second SAWP, at a wireless signaling module that processes and transmits sub-audible speech signals over a signaling channel to at least one recipient module; determining if the at least one SAWP is a word or phrase in a SAWP lexicon associated with the module; and when the at least one SAWP is recognized as belonging to the SAWP lexicon: (i) transmitting the least one SAWP representing the received SAWP over the signaling channel; and (ii) receiving the at least one SAWP from the signaling channel at the recipient module and converting the received at least one SAWP to at least one of visually perceptible alphanumeric text, audibly perceptible speech, and a coded signal representing the SAWP.