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Jointly Optimal Analysis And Synthesis Filter Banks For Bit Constrained Source Coding (1998)
| Content Provider | CiteSeerX |
|---|---|
| Author | Hjørungnes, Are Ramstad, Tor A. |
| Description | A subband coder structure is fully optimized with respect to the minimum block mean squared error between the output and the input signals under a bit constraint. The analysis filter bank structure generates maximally decimated and equal bandwidth subbands. The subband quantizers are modeled as additive noise sources. To simplify the optimization an optimal multiple-input multiple-output system is first derived. Illustrative examples showing the system performance as well as filter transfer functions are given. The performance results are compared to the rate distortion curves. 1. INTRODUCTION The optimization of low-rate subband coders suffers from two deficiencies. Firstly, the commonly used model for the quantizer is not strictly valid. Secondly, when the quantizer noise becomes sufficiently high, the perfect reconstruction property often assigned to the filter banks, is not longer optimal. Some efforts have been undertaken to overcome these obstacles. A simple improvement of the qu... in Proc. Int. Conf. on Acoustics, Speech, and Signal Proc |
| File Format | |
| Language | English |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Analysis Filter Bank Structure Input Signal Quantizer Noise Filter Transfer Function Simple Improvement System Performance Perfect Reconstruction Property Minimum Block Mean Illustrative Example Subband Coder Structure Rate Distortion Curve Low-rate Subband Coder Suffers Equal Bandwidth Subbands Optimal Analysis Synthesis Filter Bank Additive Noise Source Bit Constraint Filter Bank Performance Result Bit Constrained Source Coding Used Model Subband Quantizers Optimal Multiple-input Multiple-output System |
| Content Type | Text |
| Resource Type | Article |
