Title :
A comparison of quantization noise levels of LDI and wave digital circulator allpass filters
Author :
Holmberg, Johnny ; Harnefors, Lennart ; Signell, Svante
Author_Institution :
Dept. of Electr. Eng., Malardalen Univ., Vasteras, Sweden
Abstract :
Quantization noise levels of two low-sensitive allpass filter structures, namely wave digital circulator filters (WDCFs) and lossless digital integrator filters (LDIFs), are compared. Allpass filters are of interest for design of lowpass/highpass and bandpass/bandstop lattice filters. The results show, primarily, that second-order LDIFs have lower total quantization noise gains than corresponding WDCFs for any pole configuration within the right half-circle of the z plane. The benefit of using ladder LDIFs rather than cascaded first and second order sections is also demonstrated
Keywords :
all-pass filters; integrating circuits; poles and zeros; quantisation (signal); wave digital filters; allpass filters; bandpass filters; bandstop filters; highpass filters; lossless digital integrator filters; lowpass filters; pole configuration; quantization noise levels; right half-circle; total quantization noise gains; wave digital circulator filters; Digital filters; Electronic mail; Hardware; Lattices; Limit-cycles; Noise level; Numerical analysis; Quantization; Signal to noise ratio; Testing;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.778851
