Yoon, Byung-Jun and Malvar, Henrique S. (2006) A practical approach for the design of nonuniform lapped transforms. IEEE Signal Processing Letters, 13 (8). pp. 469-472. ISSN 1070-9908. doi:10.1109/LSP.2006.873145. https://resolver.caltech.edu/CaltechAUTHORS:YOOieeespl06
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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.
Item Type: | Article | ||||||
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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. | ||||||
Subject Keywords: | Cosine-modulated filter banks (CMFBs), extended lapped transforms (ELTs), filter banks, lapped transforms, modulated lapped transform (MLT), nonuniform filter banks | ||||||
Issue or Number: | 8 | ||||||
DOI: | 10.1109/LSP.2006.873145 | ||||||
Record Number: | CaltechAUTHORS:YOOieeespl06 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:YOOieeespl06 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 7029 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Archive Administrator | ||||||
Deposited On: | 05 Jan 2007 | ||||||
Last Modified: | 08 Nov 2021 20:38 |
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