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FIR filter graduation design
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Application background Fir (finite impulse response) filter: finite length unit impulse response filter, also known as non recursive filter is the most basic components of digital signal processing system, which can guarantee any amplitude frequency characteristics at the same time has strict linear phase frequency characteristic, also the unit sampling response is of finite length, and filter is the stability of the system. Therefore, FIR filter has been widely used in communication, image processing, pattern recognition and other fields.
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