Creator of Knowledge
Information Resources Management Association
Advancing the Concepts & Practices of Information Resources Management in Modern Organizations

Comb Filters Characteristics and Current Applications

Comb Filters Characteristics and Current Applications
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Author(s): Miriam Guadalupe Cruz-Jimenez (Institute INAOE, Mexico), David Ernesto Troncoso Romero (CONACYT at ESCOM-IPN, Mexico) and Gordana Jovanovic Dolecek (Institute INAOE Puebla, Mexico)
Copyright: 2018
Pages: 12
Source title: Encyclopedia of Information Science and Technology, Fourth Edition
Source Author(s)/Editor(s): Mehdi Khosrow-Pour, D.B.A. (Information Resources Management Association, USA)
DOI: 10.4018/978-1-5225-2255-3.ch522


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The comb filter is a very popular linear-phase filter due its simplicity, i.e. all its coefficients are equal to unity. As a consequence, it does not require multipliers or coefficients storage. This characteristic makes this filter attractive for many applications, as for example, in decimation, communications, digital audio, among others. However, the comb filter presents passband droop and a poor attenuation in the stopband region. In this proposal, the comb filter characteristics are reviewed and illustrated with one example. Additionally, the selected methods commonly used to improve the magnitude characteristics of a comb filter will be described and illustrated with examples.

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