A Practical Approach for the Design of Nonuniform Lapped Transforms Academic Article

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. 2006 IEEE.

authors

• Yoon, Byung-Jun

published proceedings

• IEEE Signal Processing Letters

author list (cited authors)

• Yoon, B., & Malvar, H. S.

citation count

• 2

complete list of authors

• Yoon, Byung-Jun||Malvar, Henrique S

publication date

• January 2006

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Signal Processing Letters  Journal

Digital Object Identifier (DOI)

• 10.1109/lsp.2006.873145

start page

• 469

end page

• 472

volume

• 13

issue

• 8

URL

• http://dx.doi.org/10.1109/lsp.2006.873145