Method and device for enhanced sound field reproduction of spatially encoded audio input signals
US9271081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2011 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for sound field reproduction into a listening area of spatially encoded first audio input signals according to sound field description data using an ensemble of physical loudspeakers. The method includes computing reproduction subspace description data from loudspeaker positioning data describing the subspace in which virtual sources can be reproduced with the physically available setup. Then, second and third audio input signals with associated sound field description data, in which second audio input signals include spatial components of the first audio input signals located within the reproducible subspace and third audio input signals include spatial components of the first audio input signals located outside of the reproducible subspace. A spatial analysis is performed on second audio input signals to extract fourth audio input signals corresponding to localizable sources within the reproducible subspace with associated source positioning data. Components of second audio input signals after spatial analysis are merged with third audio input signals into fifth audio input signals with associated sound field description data for reproduction within the reproducible subs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.