Title :
Dynamic range of allpass filter structures
Author :
Morling, R.C.S. ; Kale, I.
Author_Institution :
Univ. of Westminster, London, UK
Abstract :
Three second-order allpass filter structures that use a minimum number of multipliers are considered. These are a numerator-denominator tapped delay line (ND-TDL) structure and two wave digital filter (WDF) structures. The potential for overload for the critical internal nodes within these structures is evaluated using the L∞ and L1 norms. The relative performance of these structures indicates that the ND-TDL structure has the best all-round properties while one of the WDF structures performs poorly.
Keywords :
all-pass filters; circuit optimisation; delay lines; poles and zeros; wave digital filters; L∞ norm; L1 norm; critical internal nodes; minimum number of multipliers; multipath polyphase filters; numerator-denominator tapped delay line structure; overload potential; pole location; second-order allpass filter structures; wave digital filter structures; Arithmetic; Corporate acquisitions; Costs; Delay lines; Digital filters; Dynamic range; Feedback; Filtering; Interpolation; Transfer functions;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010484
