FIR filter FPGA
2016-08-23
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Application background
& nbsp; FIR (fini te impulse response) filter is the most basic components of digital signal processing system, which can ensure any amplitude frequency characteristics at the same time a strictly linear phase frequency characteristics, and the unit impulse response is limited, no input to output feedback, the system is stable. Therefore, FIR filter is widely used in communication, image processing, pattern recognition and so on.Key Technology
Before entering the FIR filter, first of all to the signal by a / D conversion chip analog to digital conversion, to become a 8bit digital signal, generally higher speed can be successive approximation type A / D converter, regardless of the multiply accumulate method or distributed algorithm is used to design FIR filter, filter output data are a bunch of sequence, so that it can be directly reflected, still need to through digital to analog conversion, so using FPGA FIR filter outpuverilog
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fir
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