Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/62221
Title: FREQUENCY-RESPONSE MASKING APPROACH FOR THE SYNTHESIS OF SHARP LINEAR PHASE DIGITAL FILTERS.
Authors: Lim, Yong Ching 
Issue Date: Apr-1986
Source: Lim, Yong Ching (1986-04). FREQUENCY-RESPONSE MASKING APPROACH FOR THE SYNTHESIS OF SHARP LINEAR PHASE DIGITAL FILTERS.. IEEE transactions on circuits and systems CAS-33 (4) : 357-364. ScholarBank@NUS Repository.
Abstract: If each delay element of a linear-phase, low-pass digital filter is replaced by M delay elements, an (M plus 1)-band filter is produced. The transition-width of this (M plus 1)-band filter is 1/M that of the prototype low-pass filter. A complementary filter can be obtained by subtracting the output of the (M plus 1)-band filter from a suitably delayed version of the input. The complementary filter is an (M plus 1)-band filter whose passbands and stopbands are the stopbands and passbands, respectively, of the original (M plus 1)-band filter. If the frequency responses of the original (M plus 1)-band filter and its complementary filter are properly masked and recombined, a narrow transition-band filter can be obtained. This techniques can be used to design sharp low-pass, high-pass, bandpass, and bandstop filters with arbitrary passband bandwidth.
Source Title: IEEE transactions on circuits and systems
URI: http://scholarbank.nus.edu.sg/handle/10635/62221
ISSN: 00984094
Appears in Collections:Staff Publications

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