Method and apparatus for polyphonic audio signal prediction in coding and networking systems
US9406307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, device, and apparatus provide the ability to predict a portion of a polyphonic audio signal for compression and networking applications. The solution involves a framework of a cascade of long term prediction filters, which by design is tailored to account for all periodic components present in a polyphonic signal. This framework is complemented with a design method to optimize the system parameters. Specialization may include specific techniques for coding and networking scenarios, where the potential of each enhanced prediction is realized to considerably improve the overall system performance for that application. One specific technique provides enhanced inter-frame prediction for the compression of polyphonic audio signals, particularly at low delay. Another specific technique provides improved frame loss concealment capabilities to combat packet loss in audio communications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.