Title :
A New Low-sensitivity Second-order Allpass Section Suitable for Fractional Delay Filter Realizations
Author :
Ivanova, Kamelia S. ; Stoyanov, Georgi K.
Author_Institution :
Tech. Univ. of Sofia, Sofia
Abstract :
In this paper a new second-order digital allpass section with very low sensitivity for transfer function poles near z=0 is developed and investigated. It is shown that most of the allpass-structures-based fractional-delay (FD) filters are having such poles and there are no suitable allpass sections in the literature. The new section is ensuring high accuracy realization of FD filters even in a severely limited wordlength environment.
Keywords :
all-pass filters; delay filters; transfer functions; digital IIR filters; fractional delay filter realizations; low-sensitivity second-order allpass section; transfer function poles; Delay effects; Delay estimation; Digital filters; Finite impulse response filter; Frequency; IIR filters; Modems; Speech processing; Timing; Transfer functions; Allpass sections; Digital IIR filters; Fractional-delay filters; Low sensitivity;
Conference_Titel :
Telecommunications in Modern Satellite, Cable and Broadcasting Services, 2007. TELSIKS 2007. 8th International Conference on
Conference_Location :
Serbia
Print_ISBN :
978-1-4244-1467-3
Electronic_ISBN :
978-1-4244-1468-0
DOI :
10.1109/TELSKS.2007.4376001
