A variety of electrical/hydraulic motors, pumps, fans, and blowers employed within combat vehicles impose unacceptable noise levels on crew members. this investigation addresses development and evaluation of a prototype noise reduction processor suitable for later implementation within a self-… More

A multiple access voice communications system for use in sts spacecraft is proposed. sts crew members would wear a lightweight battery-powered, (radio) transceiver headset which operates through a full-duplex, multiple (simultaneous) access, radio repeater. the proposed system utilizes an adaptive… More