Title :
Design and implementation of linear-phase 2-channel perfect reconstruction FIR filter banks with equiripple stopband
Author :
Nagai, Takayuki ; Ikehara, Masaaki
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
Abstract :
This paper presents a design and implementation method for linear phase 2-channel perfect reconstruction FIR filter banks with arbitrary filter length. In this method, which we call the weighted Lagrange-Newton method, by introducing the least squares weighting function into Horng´s method (Lagrange-Newton method), QMF (Quadrature Mirror Filters) with good stopband attenuation can be designed. Furthermore, we show the construction of a 2-channel perfect QMF that achieves perfect reconstruction in spite of coefficient quantization
Keywords :
FIR filters; Newton method; band-pass filters; band-stop filters; delay circuits; least squares approximations; linear network synthesis; quadrature mirror filters; signal reconstruction; Horng method; Lagrange-Newton method; coefficient quantization; design; equiripple stopband; least squares weighting function; linear-phase 2-channel perfect reconstruction FIR filter banks; quadrature mirror filter; Attenuation; Delay; Design methodology; Filter bank; Finite impulse response filter; Lagrangian functions; Lattices; Least squares methods; Mirrors; Quantization;
Conference_Titel :
Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2440-4
DOI :
10.1109/APCCAS.1994.514558
