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1. 发明申请

WO2014181084A1 METHOD AND APPARATUS FOR PRODUCING AN ACOUSTIC FIELD 审中-公开
标题翻译：用于产生声学场的方法和装置
公开(公告)号：WO2014181084A1
公开(公告)日：2014-11-13
申请号：PCT/GB2014/051319
申请日：2014-04-29
申请人： THE UNIVERSITY OF BRISTOL
发明人： CARTER, Thomas Andrew , LONG, Benjamin John Oliver , SUBRAMANIAN, Sriram
IPC分类号： H04S7/00
CPC分类号： G01S7/52004 , G01S7/52003 , G01S7/539 , G01S15/36 , G01S15/876 , G01S2007/52007 , H04S7/30
摘要： A plurality of control points (10) are defined which each have a known spatial relationship relative to an array of transducers. An amplitude is assigned to each control point (12). A matrix (16) is produced containing elements which represent, for each of the control points, the effect that producing a modeled acoustic field having the assigned amplitude with a particular phase at the control point has on the consequential amplitude and phase of the modeled acoustic field at the other control points (14). Eigenvectors of the matrix (18) are determined, each eigenvector representing a set of phases and relative amplitudes of the modeled acoustic field at the control points. One of the sets (20) is selected and the transducer array is operated to cause one or more of the transducers to output an acoustic wave each having an initial amplitude and phase such that the phases and amplitudes of the resultant acoustic field at the control points correspond to the phases and relative amplitudes of the selected set (22, 24).
摘要翻译：定义了多个控制点（10），每个控制点相对于换能器阵列具有已知的空间关系。向每个控制点（12）分配一个振幅。产生一个矩阵（16），其中包含元素，对于每个控制点，表示在控制点处产生具有特定相位的具有分配幅度的建模声场的效果在建模声学的相应振幅和相位上在其他控制点（14）处。确定矩阵（18）的特征向量，每个特征向量表示控制点处的建模声场的一组相位和相对幅度。选择组（20）中的一个，并且操作换能器阵列以使一个或多个换能器输出每个具有初始振幅和相位的声波，使得在控制点处的所得声场的相位和振幅对应于所选择的组（22,24）的相位和相对幅度。

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