Speech Signal Processing Research.

During this period, CullerHarrison, Inc. has developed a powerful, versatile signal processing capability for ARPA and utilized this capability to perform significant and diverse signal processing experiments. The contract called for construction, operation and maintenance of the CHI SIGNAL SYSTEM, a combination of equipment and software providing a unique marriage of computing power and on-line interactive control of that power. The system has proved its flexibility and reliability on a broad range of applications encompassing speech compression, on-line control of laboratory experiments, test editing and controlled thermonuclear reactor simulation. An on-line Interactive Math System was developed and implemented on the CHI SIGNAL SYSTEM under this contract. As a research tool, the SIGNAL Interactive Math System offers researchers the ability to develop sophisticated signal processing processes, to try out new approaches and receive numerical and graphical feedback on-line interactively, and all with button push turn-around time. The Interactive Math System has been retrofitted to an identical CHI SIGNAL SYSTEM which is playing an integral part in the ARPA Research Center, or ARC, located at Moffett Field, California.