Invention Grant
- Patent Title: 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
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Application No.: US17270528Application Date: 2019-08-22
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Publication No.: US11432100B2Publication Date: 2022-08-30
- Inventor: Georges Roussel , Rozenn Nicol
- Applicant: ORANGE
- Applicant Address: FR Issy-les-Moulineaux
- Assignee: ORANGE
- Current Assignee: ORANGE
- Current Assignee Address: FR Issy-les-Moulineaux
- Agency: Westman, Champlin & Koehler, P.A.
- Agent David D. Brush
- Priority: FR1857774 20180829
- International Application: PCT/FR2019/051952 WO 20190822
- International Announcement: WO2020/043979 WO 20200305
- Main IPC: H04S7/00
- IPC: H04S7/00 ; H04R1/40 ; H04R3/00

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.
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