Method of processing digital signals, in particular digital acoustic signals, by sample skipping and decimation filtering and corresponding device
US10264353B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 30, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Mar 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Several first digital streams of first digital samples at a first sampling frequency are processed to issue corresponding stream that are converted into second digital streams sampled at a second sampling frequency lower than said first sampling frequency. At least one delay to be applied to at least one first digital stream to satisfy a condition on the second digital streams is determined and applied to at least one first digital stream before converting. The converting operation performed is decimation filtering of the first digital streams. The application of the at least one delay to at least one first steam involves skipping a number of first digital samples in the at least one first digital stream. The number skipped depends on the value of the at least one delay. Samples that are skipped are not delivered for decimation filtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.