文章摘要
李杰,汪海涛.FRM滤波器中应用积分梳状滤波器的研究[J].声学技术,2020,39(2):251~256
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
投稿时间:2018-12-24  修订日期:2019-03-24
DOI:10.16300/j.cnki.1000-3630.2020.02.021
中文关键词: 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
英文关键词: frequency response masking(FRM) filter  cascade integrator comb(CIC) filter  computational complexity  narrow transition band
基金项目:
作者单位E-mail
李杰 上海船舶电子设备研究所, 上海 201108 ichbinjack@126.com 
汪海涛 上海船舶电子设备研究所, 上海 201108  
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中文摘要:
      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。
英文摘要:
      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.
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