HUNTSVILLE, Ala., 22 Nov. 2016. Executives of embedded computing specialist Abaco Systems in Huntsville, Ala., are boosting their company's expertise in digital signal processing (DSP) with their acquisition of 4DSP LLC of Austin, Texas.4DSP designs and manufactures commercial off-the-shelf (COTS) high speed DSP and data-acquisition solutions based on field-programmable gate array (FPGA) technology for aerospace, defense, biomedical, communications, and semiconductor applications.