Title :
A class of efficient recursive quadrature mirror filters for subband coding
Author :
Pei, Soo-Chang ; Jaw, Sy-been
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
12/1/1991 12:00:00 AM
Abstract :
A class of recursive quadrature mirror filters (QMFs) of the form H(Z)=N(Z)/D(Z 2) is proposed for subband coding. These filters can be efficiently designed with the iterative Remez exchange algorithm. Simple modifications are made to the Pei (see IEEE Trans. Circuits Syst., vol.CAS-36, no.2, p.311, 1989), Liang, McClellan, and Parks computer program for designing these recursive QMF filters efficiently. The resulting filters totally eliminate the aliasing terms and can achieve almost perfect magnitude reconstruction, with -131.5-dB distortion. A design example is presented to show the effectiveness of this approach
Keywords :
circuit CAD; digital filters; encoding; iterative methods; signal processing; computer program; iterative Remez exchange algorithm; magnitude reconstruction; recursive quadrature mirror filters; subband coding; Algorithm design and analysis; Attenuation; Finite impulse response filter; Frequency; IIR filters; Image reconstruction; Interpolation; Linearity; Memory; Mirrors;
Journal_Title :
Signal Processing, IEEE Transactions on
