Interactive Minimax Design of Nonrecursive Digital Filters.
Abstract
The problem of finding a mimimax approximation to an ideal frequency response of a nonrecursive digital filter is studied. The general Remes exchange algorithm for computing the approximation has been implemented using a computer graphics display. Dependence of sidelobe level on the transition band width is considered. In order to obtain a tighter fit in certain regions the techniques of approximation with restricted range are used to compute an approximation which is constrained to lie between two restraining curves. Error trade-off between unconstrained and constrained approximations is considered. A careful mathematical study of discretization error is made. A comparison is made between the authors' approach using restraining curves and the approaches of other investigators in this area. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 16, 1972
- Accession Number
- AD0750767
Entities
People
- Donald W. Tufts
- Harlan S. Hersey
- James T. Lewis
Organizations
- University of Rhode Island