The SPS-41 and SPS-81 programmable digital signal processors
Joseph R. Fisher · 1973
The SPS-41 and SPS-81 are very high speed multiprocessor computers designed for signal processing applications. They can either function as stand-alone processors or operate in conjunction with a conventional computer. The SPS-41 provides the capability to perform signal processing functions with about a 100 fold increase in speed over a conventional computer—typically 8.3 milliseconds for a 1024 complex Fast Fourier Transform. The SPS-81 is roughly twice as fast as the SPS-41. This speed is achieved through a highly parallel architecture which is optimized for signal processing operations.