LOW-DELAY FIR FILTER BANKS - DESIGN AND EVALUATION

The subject of this paper is the design of low and minimum delay, exact reconstruction analysis-synthesis systems based on filter banks. This paper, for the first time, presents a time domain approach to the problem of designing FIR filter banks with adjustable reconstruction delays. It is shown that using a time domain formulation for the analysis-synthesis systems, the system delay can be considered to be relatively independent of the length of the analysis and synthesis filters. After a summary of the time domain analysis and design framework, the design of low and minimum delay systems is considered in detail. Several design examples are provided in the paper to demonstrate the performance of the design algorithm.