Digital filter sampling rate conversion method and device
US5111417A · kind A · utility
34Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0685
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital filter providing output samples at a rate B while input samples are being provided at a rate A. The filter impulse response h(t) is sampled at a rate P=a.A=b.B, with P being the lowest common multiple to A and B, to derive Np filter coefficients therefrom. The coefficients are arranged into "a" sets of Np/a coefficients and stored. Output samples are then computed by feeding input samples Sn at incoming rate while permutating the sets of coefficients and generating output samples at the output rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.