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Parallel processing (DSP implementation)
In digital signal processing (DSP), parallel processing is a technique duplicating function units to operate different tasks (signals) simultaneously.〔K. K. Parhi, VLSI Digital Signal Processing Systems: Design and Implementation, John Wiley, 1999〕 Accordingly, we can perform the same processing for different signals on the corresponding duplicated function units. Further, due to the features of parallel processing, the parallel DSP design often contains multiple outputs, resulting in higher throughput than not parallel.
==Conceptual example==
Consider a function unit (''F''0) and three tasks (''T''0, ''T''1 and ''T''2). The required time for the function unit ''F''0 to process those tasks is ''t''0,''t''1 and ''t''2 respectively. Then, if we operate these three tasks in a sequential order, the required time to complete them is ''t''0 + ''t''1 + ''t''2.
However, if we duplicate the function unit to another two copies (''F''), the aggregate time is reduced to max(''t''0,''t''1,''t''2), which is smaller than in a sequential order.
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