Title :
Sigma-Delta bitstream filtering in VLSI
Author :
Summerfield, Steve ; Kershaw, Simon M. ; Sandler, Mark B.
Author_Institution :
Dept. of Eng., Warwick Univ., Coventry, UK
Abstract :
This paper considers the prospects for filters with analogue I/O and internal digital signal processing performed performed directly on a Sigma-Delta modulated bitstream, with potential applications to audio systems. Simulations verify equivalent 16-bit performance of a bitstream FIR filter. VLSI design is highly regular and initial evaluation indicates that bitstream filtering is a viable alternative to decimation followed by PCM filtering
Keywords :
FIR filters; VLSI; sigma-delta modulation; 16 bit; FIR filter; VLSI; analogue I/O; audio systems; internal digital signal processing; sigma-delta bitstream filtering; simulation; Audio systems; Content addressable storage; Costs; Delta-sigma modulation; Digital filters; Digital modulation; Digital signal processing; Encoding; Filtering; Finite impulse response filter; Phase change materials; Signal processing; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.519024
