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Cascade digital filters for realizing a transfer function obtained by cascade-connecting moving average filters
Cascade digital filters for realizing a transfer function obtained by cascade-connecting moving average filters
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机译:级联数字滤波器,用于实现通过级联移动平均滤波器而获得的传递函数
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摘要
A cascade digital filer has a plurality of cascade-connecting pairs of integrators and differentiators to realize a transfer function obtained by cascade-connecting a plurality of moving average filters. Each of the integrators includes an adder which has a two's complement operating function which inverts its polarity on overflow. Each of the differentiators also includes an adder which has the same number of bits and the same function as does the adder of integrator. The adder in each of the integrators and differentiators prevents the output of the digital filter from diverging, thus resulting in normal filtered output.
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