Invention Grant
US07684578B2 Wave field synthesis apparatus and method of driving an array of loudspeakers
有权
用于驱动扬声器阵列的波场合成装置和方法
- Patent Title: Wave field synthesis apparatus and method of driving an array of loudspeakers
- Patent Title (中): 用于驱动扬声器阵列的波场合成装置和方法
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Application No.: US11305546Application Date: 2005-12-16
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Publication No.: US07684578B2Publication Date: 2010-03-23
- Inventor: Thomas Roeder , Thomas Sporer , Sandra Brix
- Applicant: Thomas Roeder , Thomas Sporer , Sandra Brix
- Applicant Address: DE
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee Address: DE
- Agency: Thomas, Kayden, Horstemeyer & Risley. LLP.
- Priority: DE10328335 20030624
- Main IPC: H04R5/02
- IPC: H04R5/02 ; H04B3/20 ; H02B1/00 ; G06F17/00

Abstract:
In a wave field synthesis apparatus for driving an array of loudspeakers with drive signals, the loudspeakers being arranged at different defined positions, a drive signal for a loudspeaker being based on an audio signal associated with a virtual source having a virtual position with reference to the loudspeaker array and on the defined position of the loudspeaker, at first relevant loudspeakers of the loudspeaker array are determined on the basis of the position of the virtual source, a predefined listener position, and the defined positions of the loudspeakers, so that artifacts due to loudspeaker signals moving opposite to a direction from the virtual source to the predefined listener position are reduced. Downstream to means for calculating the drive signal components for the relevant loudspeakers and for a virtual source, there is means for providing the drive signal components for the relevant loudspeakers for the virtual source to the relevant loudspeakers, wherein no drive signals for the virtual source are provided to loudspeakers of the loudspeaker array not belonging to the relevant loudspeakers. With this, artifacts in an area of the audience room due to a generation wave field are suppressed, so that in this area only the useful wave field is heard in artifact-free manner.
Public/Granted literature
- US20060098830A1 Wave field synthesis apparatus and method of driving an array of loudspeakers Public/Granted day:2006-05-11
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