Apparatus for modifying a sampling rate system including an apparatus for modifying a sampling rate and method for modifying a sampling rate
US10418974B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2017/0214
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for modifying a sampling rate includes a forward transformer for forming a first version of a spectrogram by means of transformation with a first transformation length from an information signal with a first sampling rate. The apparatus includes a processor for forming a second version of the spectrogram with a lower bandwidth than the first version. The apparatus includes a reverse transformer for forming a coarsely pre-modified information signal with a second sampling rate that is reduced with respect to the first sampling rate, by means of reverse transformation of the second version of the spectrogram with a second transformation length that is reduced with respect to the first transformation length. The apparatus includes a time domain interpolator for acquiring an information signal with a third sampling rate that is modified with respect to the second sampling rate, by means of interpolation of the pre-modified information signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.