Error spectrum shapping in narrow-band recursive filters
Abstract
The error introduced by zero memory quantizers can usually be modeled by an additive white noise component. By incorporating feedback and additional memory elements to these quantizers, it is possible to shape the error spectrum to advantage. Two simple error spectrum shaping quantizers are presented, one to be used with narrow-band low-pass filters and the other with high-pass filters. Simulation examples are presented where the reduction in roundoff errors is equivalent to three bits of data.
- Publication:
-
IEEE Transactions on Acoustics Speech and Signal Processing
- Pub Date:
- April 1977
- Bibcode:
- 1977ITASS..25..200T
- Keywords:
-
- Digital Filters;
- High Pass Filters;
- Low Pass Filters;
- Recursive Functions;
- Signal Processing;
- Truncation Errors;
- Computerized Simulation;
- Error Analysis;
- Mathematical Models;
- Noise Spectra;
- Stochastic Processes;
- White Noise;
- Electronics and Electrical Engineering