FRM滤波器中应用积分梳状滤波器的研究  

The study of FRM filter using cascade integrator comb filter

作　　者：李杰 汪海涛 LI Jie;WANG Haitao(Shanghai Marine Electronic Equipment Research Institute,Shanghai 201108,China)

机构地区：[1]上海船舶电子设备研究所,上海201108

出　　处：《声学技术》2020年第2期251-256,共6页Technical Acoustics

摘　　要：传统的频率响应屏蔽(Frequency Response Masking,FRM)滤波器由多个含有乘法器的滤波器构成,计算复杂度较高。提出了一种改进窄带低通FRM数字滤波器设计复杂度的方法,使用积分梳状滤波器作为屏蔽滤波器,以达到设计窄过渡带的滤波器的要求。仿真结果表明,在降低窄带低通FRM滤波器计算复杂度方面效果明显,有效地减少了乘法器的使用,降低了目标滤波器设计的阶数。该方法可以应用于窄过渡FRM数字滤波器的设计中。The traditional frequency response masking(FRM)filter consists of multiple filters with multiplier unit,which has a relatively high computational complexity.In this paper a method of improving the design complexity of narrow-band low pass FRM digital filter is proposed,in which the cascade integrator comb(CIC)filter is used as the masking filters to satisfy the design requirements of narrow transition band and to lower the computational complexity filter.The results of simulation show that this method is quite effective in reducing the computational complexity of narrow-band low pass FRM filter and in reducing the use of the multiplier units and the order of the target filter.Therefore,this method can be used in the design of narrow transition band FRM digital filter.

关 键 词：频率响应屏蔽滤波器 积分梳状滤波器 计算复杂度 窄过渡带 

分 类 号：TN713.7[电子电信—电路与系统]