Digital filter apparatus having a resonance characteristic
US4489391A · kind A · utility
12Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Feb 17, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A resonance characteristic control unit is provided with a first memory for storing first data corresponding to poles of a digital filter under a non-resonance condition, and a second memory for storing second data corresponding to poles of the filter under maximum resonance amplitude condition. The data stored in these memories are read out to calculate a filter coefficient corresponding to the resonance amplitude. The calculated resultant data is supplied to the digital filter to obtain a filtered output which is provided with a desired resonance characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.