In this paper, we present a design method of perfect reconstruction (PR) FIR filter banks by discrete Fourier transform modulation (DFT-modulation). In the previous work, the implementation of cosine-modulated PR filter banks is shown to be easy to design and capable of fast processing, but this method is a little bit inconvenient because of its restriction of the filter length. In our new approach filter banks are implemented by DFT-modulation of prototype filter with complex coefficients and has some advantages over the previous work. Furthermore, we propose a optimization method using Lagrange-Newton method. In the last part we show design example and this method effective.
|Number of pages||4|
|Journal||Proceedings - IEEE International Symposium on Circuits and Systems|
|Publication status||Published - 1996 Jan 1|
|Event||Proceedings of the 1996 IEEE International Symposium on Circuits and Systems, ISCAS. Part 1 (of 4) - Atlanta, GA, USA|
Duration: 1996 May 12 → 1996 May 15
ASJC Scopus subject areas
- Electrical and Electronic Engineering