AFSATCOM-Compatible 75 b/s Voice System

An interactive, real-time Voice System can provide on-line, intelligible, synthetic speech over a 75 bits-per-second (b/s) teletype Air Force Satellite Communications (AFSATCOM) channel. This flexible, cost-effective system operates in both clear and secure AFSATCOM operational modes. The demonstration hardware and software are described along with background information on the AFSArCOM system. The conclusion is that adding voice response to existing hard-copy teletype output over a limited capacity channel is feasible without modifying AFSATCOM hardware or software. In addition, such a Voice System appears attractive for other applications where channel capacity restricts operation to low data rates only.