Low-sensitivity digital-filter structures which are amenable to error-spectrum shaping
Abstract
A systematic and exhaustive procedure is used to generate a class of new low-sensitivity second-order digital-filter structures which are amenable to error-spectrum shaping (ESS). Collectively, these structures can realize any stable second-order transfer function. For every transfer function, a choice of at least two structures is available but, through a sensitivity analysis, the optimum one can always be identified. The paper concludes with sensitivity and roundoff-noise comparisons which show that the new structures are usually superior relative to corresponding direct canonic structures and also relative to the state-space section-optimal structure.
- Publication:
-
IEEE Transactions on Circuits Systems
- Pub Date:
- October 1985
- Bibcode:
- 1985ITCS...32.1000D
- Keywords:
-
- Digital Filters;
- Error Correcting Devices;
- Network Synthesis;
- Noise Spectra;
- Optimal Control;
- Transfer Functions;
- Adding Circuits;
- Bandpass Filters;
- Bandstop Filters;
- Feedback Control;
- High Pass Filters;
- Low Pass Filters;
- Noise Reduction;
- Recursive Functions;
- Sensitivity;
- Electronics and Electrical Engineering