发明名称 |
A method and a device for actively reducing the sound level in a region of a space |
摘要 |
The invention concerns a method and a device for actively reducing the level of a primary field of sound or vibration in a space (2). Control sensors (7) sense a parameter related to said level. Actuators (6) produce a secondary field of sound or vibration interfering with said primary field. A first transfer function matrix defines for each control sensor the level of the parameter caused by the actuator excitation. Monitor sensors (16) sense said parameter related to the level of the primary field. A second transfer matrix defines for each monitor sensor (16) the level caused by actuator excitation. A control unit (10) controls the actuators (6) by the relation between the first transfer matrix and the second transfer matrix, the control sensors (7) and the monitor sensors (16), and a residual vector of the actual level of the control sensors. |
申请公布号 |
SE9804311(D0) |
申请公布日期 |
1998.12.14 |
申请号 |
SE19980004311 |
申请日期 |
1998.12.14 |
申请人 |
SAAB AB |
发明人 |
SIV *LETH;WILLIAM G *HALVORSEN;PATRICK *BARNEY |
分类号 |
G10K11/178;(IPC1-7):G10K/ |
主分类号 |
G10K11/178 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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