Published August 1, 2006
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Journal Article
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A practical approach for the design of nonuniform lapped transforms
- Creators
- Yoon, Byung-Jun
- Malvar, Henrique S.
Abstract
We propose a simple method for the design of lapped transforms with nonuniform frequency resolution and good time localization. The method is a generalization of an approach previously proposed by Princen, where the nonuniform filter bank is obtained by joining uniform cosine-modulated filter banks (CMFBs) using a transition filter. We use several transition filters to obtain a near perfect-reconstruction (PR) nonuniform lapped transform with significantly reduced overall distortion. The main advantage of the proposed method is in reducing the length of the transition filters, which leads to a reduction in processing delay that can be useful for applications such as real-time audio coding.
Additional Information
© Copyright 2006 IEEE. Reprinted with permission. Manuscript received December 10, 2005; revised January 23, 2006. [Posted online: 2006-07-17] The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Dimitri Van De Ville.Files
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Additional details
- Eprint ID
- 7029
- Resolver ID
- CaltechAUTHORS:YOOieeespl06
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2007-01-05Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field