A class of IIR filters synthesized using frequency-response masking technique

A class of IIR filters synthesized using frequency-response masking technique

This letter presents a class of infinite impulse response (IIR) filters synthesized using a system of IIR subfilters based on the frequency-response masking (FRM) technique. In the proposed class of filters, the bandedge shaping filters are a parallel connection of two allpass filters, and the maski...

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Bibliographic Details
Main Authors: Liu, Qinglai, Lim, Yong Ching, Lin, Zhiping
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Engineering::Electrical and electronic engineering
Infinite Impulse Response Filter
Frequency-Response Masking
Online Access:https://hdl.handle.net/10356/161027
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Institution: Nanyang Technological University
Language: English
Description
Summary:This letter presents a class of infinite impulse response (IIR) filters synthesized using a system of IIR subfilters based on the frequency-response masking (FRM) technique. In the proposed class of filters, the bandedge shaping filters are a parallel connection of two allpass filters, and the masking filters are approximately linear phase IIR filters composed of a parallel connection of a delay line and an allpass filter. A design method which jointly optimizes the IIR subfilters is introduced. The proposed class of IIR filters has lower coefficient sensitivity and roundoff noise compared with conventional IIR filters.

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