Dropout concealment for a multi-channel arrangement
US8260608B2 · kind B2 · utility
2Cited by
6References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | May 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method conceals dropouts in one or more audio channels of a multi-channel arrangement. The method maps transmitted signals into a frequency domain during an error-free signal transmission of two or more channels. A magnitude spectra and spectral filter coefficients are derived. The spectral filter coefficients relate the magnitude spectrum of the audio channel to the magnitude spectrum of at least one other channel. When a dropout occurs, a replacement signal is generated through the filter coefficients and a substitution signal. The filter coefficients may be generated prior to the detection of the dropout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.