Ling, Wing-Kuen and Tam, Kwong-Shun
(2001)
Fast implementation of a general L/M rate changer by a filter bank structure.
In: International Symposium on Intelligent Multimedia, Video and Speech Processing, May 2001, Hong Kong.
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| Item Type: | Conference or Workshop contribution (Paper) |
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| Item Status: | Live Archive |
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Abstract
In this paper, we show that an L/M rate changer can be realized as a discrete time SISO (L,M) shift invariant system in form of a two-dimensional kernel function or a filter bank structure. Based on this realization, we can implement an L/M rate changer by a bank of filters with the average number of the coefficients in the filters in each channel is 1/L of the original L/M rate changer. Hence, the system is speed up by L. This helps the designer to design a sharp cutoff discrete time FIR filters in an L/M rate changer for some real time applications in video systems.
| Additional Information: | In this paper, we show that an L/M rate changer can be realized as a discrete time SISO (L,M) shift invariant system in form of a two-dimensional kernel function or a filter bank structure. Based on this realization, we can implement an L/M rate changer by a bank of filters with the average number of the coefficients in the filters in each channel is 1/L of the original L/M rate changer. Hence, the system is speed up by L. This helps the designer to design a sharp cutoff discrete time FIR filters in an L/M rate changer for some real time applications in video systems. |
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| Keywords: | L/M rate changer, kernel function, filter bank structure, sharp cutoff discrete time FIR filters |
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| Subjects: | H Engineering > H610 Electronic Engineering |
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| Divisions: | College of Science > School of Engineering |
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| ID Code: | 3112 |
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| Deposited On: | 02 Aug 2010 15:56 |
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