Method for the spatialized sound reproduction of a sound field that is audible in a position of a moving listener and system implementing such a method
US11432100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer-assisted method for spatialized sound reproduction based on an array of loudspeakers, for the purpose of producing a selected sound field at a position of a listener. The method includes iteratively and continuously: obtaining a current position of a listener; determining respective acoustic transfer functions of the loudspeakers at a virtual microphone of which the position is defined dynamically as a function of the current position of the listener, estimating a sound pressure at the virtual microphone; calculating an error between the estimated sound pressure and a target sound pressure; calculating and applying respective weights to the control signals of the loudspeakers as a function of the error and of a weight forgetting factor, the forgetting factor being calculated as a function of a movement of the listener, and calculating the sound pressure at the current position of the listener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.