Fast digital filters without multipliers
Abstract
New second-order digital filter structures with five nodes allow the realization of filters without multipliers. Only adders and hardwired shifters are required. A PCM lowpass with 50 Hz suppression realized without multipliers processes, with present technology, the data words two times faster than a filter with multipliers, ten times faster than a filter with three time-multiplexed multipliers, and thirty times faster than a filter with one time-multiplexed multiplier.
- Publication:
-
Archiv Elektronik und Uebertragungstechnik
- Pub Date:
- August 1982
- Bibcode:
- 1982ArElU..36..275L
- Keywords:
-
- Bandpass Filters;
- Digital Filters;
- Multipliers;
- Network Synthesis;
- Adding Circuits;
- Block Diagrams;
- Pulse Code Modulation;
- Electronics and Electrical Engineering