Ambience extraction and modification for enhancement and upmix of audio signals
US7412380B1 · kind B1 · utility
74Cited by
9References
16Claims
0Family size
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Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Nov 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Modifying an audio signal comprising a plurality of channel signals is disclosed. At least selected ones of the channel signals are transformed into a time-frequency domain. The at least selected ones of the channel signals are compared in the time-frequency domain to identify corresponding portions of the channel signals that are not correlated or are only weakly correlated across channels. The identified corresponding portions of said channel signals are modified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.