采用归一化变换的方法，使不同选频滤波器变换为标准低通滤波器，简化了设计过程。
The adoption of the unitary transform method can transform different frequency filters into the standard lower pass filters, and thus simplify the design process.
采用归一化变换的方法，使不同选频滤波器变换为标准低通滤波器，简化了设计过程。
The adoption of the unitary transform method can transform different frequency filters into the standard lower pass filters, and thus simplify the design process.
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