Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
Jianlin Li , Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
T.Q. Nguyen , Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
The theory and design of perfect-reconstruction uniform-band QMF banks have been extensively studied. For nonuniform-band filter banks, there is a lack of efficient design methods. We propose a simple design method for nonuniform integer-decimated filter banks (near perfect reconstruction). The approach is to transform the nonuniform filter bank design problem to a corresponding uniform filter bank design problem. Therefore, only one prototype filter needs to be designed. The analysis and synthesis filters are simple combinations of the cosine modulated versions of the prototype filter. An example is given to demonstrate the proposed method.<
band-pass filters, quadrature mirror filters, modulation, filtering theory, signal reconstruction
Jianlin Li, T. Nguyen and S. Tantaratana, "A simple design method for nonuniform multirate filter banks," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 1015-1019.