发明名称 |
Active noise cancelling muffler |
摘要 |
An active muffler noise cancellation system having an active controller, a speaker housing with acoustic compliance spaces, a duct extension in communication with said speaker housing and adapted to conform a dipole radiation pattern into a plane wave which can be measured by a microphone.
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申请公布号 |
US5748749(A) |
申请公布日期 |
1998.05.05 |
申请号 |
US19960670111 |
申请日期 |
1996.06.25 |
申请人 |
NOISE CANCELLATION TECHNOLOGIES, INC. |
发明人 |
MILLER, SCOTT;SHIPPS, J. CLAY |
分类号 |
F01N1/02;F01N1/06;G10K11/178;(IPC1-7):A61F11/06;H03B29/00 |
主分类号 |
F01N1/02 |
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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