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About Digital Signal Processors (DSP)
Digital signal processors (DSP) are special microprocessors designed for digital signal processing, usually in real-time. DSPs can also be used to perform general-purpose computations; however, they are not optimized for this function. Instead, DSPs use an instruction set architecture (ISA) that is optimized for rapid signal processing. Important ISA features include deep pipelining to enhance microprocessor performance and the ability to act as a direct memory access device (DMA) for the host environment. Digital signal processors also use Harvard architecture with separate program and data memory. In addition, DSPs use saturation arithmetic so that overflow operations accumulate at the maximum or minimum values that the register can hold instead of wrapping around. With DSPs, the maximum remains the maximum. By contrast, with many general-purpose CPUs, the sum of the maximum plus one equals the minimum.
Engineering Web: Digital Signal Processors DSP - Machine Design
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Digital Signal Processors "Think" Analog But Work Digitally |... Digital Signal Processors "Think" Analog But Work Digitally Digital Signal Processors "Think" Analog But Work Digitally |
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Hear me, see me, filter me | Machine Design Modern digital signal processors not only make short work of complex signal-processing jobs, they also are adept at handling general-purpose control. |
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Motion Monitor from Machine Design and Motion Systems Design linearity of ±0.03%. A newly developed linearized CCD (Li-CCD) with digital signal technology, achieves 0.0004 Mil (0.01µm) resolution. |
