NDLI: Exact reconstruction techniques for tree-structured subband coders

Content Provider	IEEE Xplore Digital Library
Author	Smith, M. Barnwell III, T.
Copyright Year	1974
Abstract	In recent years, tree-structured analysis/reconstruction systems have been extensively studied for use in subband coders for speech. In such systems, it is imperative that the individual channel signals be decimated in such a way that the number of samples coded and transmitted do not exceed the number of samples in the original speech signal. Under this constraint, the systems presented in the past have sought to remove the aliasing distortion while minimizing the overall analysis/reconstruction distortion. In this paper, it is shown that it is possible to design tree-structured analysis/reconstruction systems which meet the sampling rate condition and which result in exact reconstruction of the input signal. The conditions for exact reconstruction are developed and presented. Furthermore, it is shown that these conditions are not overly restrictive and high-quality frequency division may be performed in the analysis section. A filter design procedure is presented which allows high-quality filters to be easily designed.
Starting Page	434
Ending Page	441
Page Count	8
File Size	776058
File Format	PDF
ISSN	00963518
Volume Number	34
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1986-06-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite impulse response filter Phase distortion Frequency Decoding Speech analysis Performance analysis Band pass filters Speech coding Channel coding Signal analysis
Content Type	Text
Resource Type	Article
Subject	Signal Processing

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