Metadata for loudness and dynamic range control
US9559651B2 · kind B2 · utility
16Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.