12. The system of claim 7 wherein: the communication is a current communication and the voice print selected for exclusion is associated with at least one previous communication, and the filter engine selects the at least one voice print for removal responsive to a determination that a current characteristic of the current communication does not match a previous characteristic of the at least one previous communication.
13. The system of claim 12 wherein the current characteristic and the previous characteristic are one of: a current phone number associated with the current communication and a previous phone number associated with the at least one previous communication respectively; a current network address associated with the current communication and a previous network address associated with the previous communication respectively; and a current device identifier associated with the current communication and a previous device identifier associated with the previous communication respectively.