Discrete multichannel audio with a backward compatible mix
US7212872B1 · kind B1 · utility
43Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2000 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | May 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S3/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multichannel audio format provides a truly discrete as well as a backward compatible mix for surround-sound, front or other discrete audio channels in cinema, home theater, or music environments. The additional discrete audio signals are mixed with the existing discrete audio channels into a predetermined format such as the 5.1 audio format. In addition these additional discrete audio channels are encoded and appended to the predetermined format as extension bits in the bitstream. The existing base of multichannel decoders can be used in combination with a mix decoder to reproduce truly discrete N.1 multichannel audio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.