公开(公告)号：US20080129470A1

公开(公告)日：2008-06-05

申请号：US11901270

申请日：2007-09-14

申请人： James J. Croft ,  Wensen Liu ,  Clifton Wynn Thompson

发明人： James J. Croft ,  Wensen Liu ,  Clifton Wynn Thompson

IPC分类号： G08B3/10 ,  H01L41/00

CPC分类号： H04R1/406

摘要： A directional acoustic device configured for producing a directional output along an acoustic axis, including at least one transducer configured to create at least two wave trains which are directed along differing pathways by at least one wave guide, and so disposed that in directions more than ninety degrees off the acoustic axis the SPL of the output is greatly diminished by cancellation effects between the wave trains; improvement over previous gradient and quarter-wave pipe directional systems being enabled.

摘要翻译： 定向声学装置，其被配置用于沿着声轴产生定向输出，包括至少一个换能器，其构造成产生至少两个波段，所述至少两个波列通过至少一个波导引导沿着不同的路径，并且被设置为沿着超过九十 离开声轴，输出的SPL通过波列之间的抵消效应大大减少; 改进了以前的梯度和四分之一波导管系统的启用。

公开(公告)号：US07551062B2

公开(公告)日：2009-06-23

申请号：US11901270

申请日：2007-09-14

申请人： James J. Croft, III ,  Wensen Liu ,  Clifton Wynn Thompson

发明人： James J. Croft, III ,  Wensen Liu ,  Clifton Wynn Thompson

IPC分类号： G08B3/10

CPC分类号： H04R1/406

摘要： A directional acoustic device configured for producing a directional output along an acoustic axis, including at least one transducer configured to create at least two wave trains which are directed along differing pathways by at least one wave guide, and so disposed that in directions more than ninety degrees off the acoustic axis the SPL of the output is greatly diminished by cancellation effects between the wave trains; improvement over previous gradient and quarter-wave pipe directional systems being enabled.

摘要翻译： 定向声学装置，其被配置用于沿着声轴产生定向输出，包括至少一个换能器，其构造成产生至少两个波段，所述至少两个波列通过至少一个波导引导沿着不同的路径，并且被设置为沿着超过九十 离开声轴，输出的SPL通过波列之间的抵消效应大大减少; 改进了以前的梯度和四分之一波导管系统的启用。