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介绍采用多相技术设计FIR成形滤波器的方法,并以一个8阶4倍插值成形滤波器的设计为例,验证该方法在减少硬件资源消耗和提高电路速度方面的有效性。
The method of designing FIR shaping filter by using polyphase technology is introduced. Taking an 8th order 4x interpolation shaping filter as an example, the effectiveness of this method in reducing hardware resource consumption and circuit speed is demonstrated.