Method for correcting metadata affecting the playback loudness and dynamic range of audio information
US7617109B2 · kind B2 · utility
58Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2004 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A coded signal conveys encoded audio information and metadata that may be used to control the loudness and dynamic range of the audio information during its playback. If the values for these metadata parameters are set incorrectly, annoying fluctuations in loudness during playback can result. The present invention overcomes this problem by detecting incorrect metadata parameter values in the signal and replacing the incorrect values with corrected values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.