Voice communications for command and control can be severely impaired by the presence of background noise at the talker's microphone. one of the major sources of background noise is engine or turbine noise. signatron proposes a new approach for an adaptive noise cancellation system to reduce the… More

Secure voice communications over narrow (10 - 12.5 khz) channels is becoming increasingly important. speech compressiion for use over such narrow channels must operate at 9.6 kbps. existing speechcompression approaches at 9.6 kbps suffer from problems such as sensitivity to input noise, sensitivity… More

This project investigates low-cost video linking of rural schools and school districts. recent advances in technology suggest that the former military technology of troposcatter radio can be converted for digital video transmission over long distances in interactive classroom instruction at a… More

Real time hardware channel simulators are critical elements in the design, debug and testing of communication systems. Signatron has for over 20 years been a pioneer and leading developer of channel simulators for a wide range of special purposes, including radar, sonar, and Satellite, microwave,… More