Method and apparatus for removing or isolating voice or instruments on stereo recordings
US7912232B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 27, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Jan 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02087
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A first embodiment of the invention provides a method and apparatus for attenuating or amplifying voice or other signals present on a stereo audio recording that uses frequency domain techniques to calculate a time- and frequency-dependent gain factor, based on the input panning and phase information in the recording, and optionally outputs the original recording's phase and/or panning information. A further embodiment of the invention provides a method and apparatus for attenuating or amplifying voice or other signals present on a stereo audio recording that uses training-based frequency domain techniques in each frequency band to calculate a time- and frequency-dependent gain factor, based on the input panning, phase offset, and magnitude information in the recording, and optionally outputs the original recording's phase and/or panning information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.