Multiresolution coding and modulation system
US10134412B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Aug 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/183
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multiresolution coding and modulation system for preserving audio continuity in a digital wireless audio system in harsh RF environments is provided that includes an audio codec that produces codewords having bits differing in perceptual importance coupled with a non-uniform hierarchical modulation scheme. When the wireless audio system is operating in a harsh RF environment, the RF SNR for decoding bits having a high perceptual importance may be decreased while the RF SNR for decoding bits having a low perceptual importance may be increased, while having no adverse effect on the latency of the wireless audio system. The audio may be subjectively degraded instead of muting the audio, which mitigates intermittent interference and multipath fading issues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.