Digital multirate filtering
US7321913B2 · kind B2 · utility
13Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Mar 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0261
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of determining filter coefficients for filter stages in a multirate digital filter device to achieve a desired filter response. The method includes the step of determining a first plurality of evenly spaced sample points representing the desired response function on a logarithmic time scale, such that the sample points of the first plurality have an increasing spacing when viewed in a linear time scale. The method further includes the step determining filter coefficients for each filter stage from an associated group of sample points out of the first plurality of sample points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.