Apparatus for processing an audio signal and method thereof
US8275150B2 · kind B2 · utility
3Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G9/005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for processing an audio signal and method thereof are disclosed, by which a local dynamic range of an audio signal can be adaptively normalized as well as a maximum dynamic range of the audio signal. The present invention includes receiving a signal, by an audio processing apparatus; computing a long-term power and a short-term power by estimating power of the signal; generating a slow gain based on the long-term power; generating a fast gain based on the short-term power; obtaining a final gain by combining the slow gain and the fast gain; and, modifying the signal using the final gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.