Editing Signal processing (section)

==History==
According to [[Alan V. Oppenheim]] and [[Ronald W. Schafer]], the principles of signal processing can be found in the classical [[numerical analysis]] techniques of the 17th century.  They further state that the digital refinement of these techniques can be found in the digital [[control system]]s of the 1940s and 1950s.<ref>{{cite book |title=Digital Signal Processing |year=1975 |publisher=[[Prentice Hall]] |isbn=0-13-214635-5 |author=Oppenheim, Alan V. |author2=Schafer, Ronald W. |page= 5}}</ref>

In 1948, [[Claude Shannon]] wrote the influential paper "[[A Mathematical Theory of Communication]]" which was published in the ''[[Bell System Technical Journal]]''.<ref>{{cite web |url=https://www.computerhistory.org/revolution/digital-logic/12/269/1331 |title=A Mathematical Theory of Communication – CHM Revolution |website=Computer History |access-date=2019-05-13}}</ref>  The paper laid the groundwork for later development of information communication systems and the processing of signals for transmission.<ref name=fifty>{{cite book |title=Fifty Years of Signal Processing: The IEEE Signal Processing Society and its Technologies, 1948–1998 |publisher=The IEEE Signal Processing Society |year=1998 |url=https://signalprocessingsociety.org/uploads/history/history.pdf}}</ref>

Signal processing matured and flourished in the 1960s and 1970s, and [[digital signal processing]] became widely used with specialized [[digital signal processor]] chips in the 1980s.<ref name=fifty/>