Method for the spatialized sound reproduction of a sound field which is selectively audible in a sub-area of an area
US11317234B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jun 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for spatialized sound reproduction using an array of loudspeakers, to generate a chosen sound field selectively audible in a first predetermined sub-area of an area covered by the loudspeakers, the area further including a second sub-area in which the chosen sound field is inaudible. The loudspeakers are supplied with respective control signals so that each one continuously emits an audio signal. The method includes, iteratively and continuously: estimating a sound pressure in the second sub-area as a function of the respective control signals of the loudspeakers, and of a respective initial weight of the control signals; calculating an error between the estimated sound pressure and a target sound pressure in the second sub-area; and, calculating and applying respective weights to the control signals, based on the error. The sound pressure in the second sub-area is calculated again based on the respective weighted control signals of the loudspeakers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.