发明名称 |
ACTIVE NOISE REDUCING FILTER APPARATUS, AND A METHOD OF MANUFACTURING SUCH AN APPARATUS |
摘要 |
The invention provides an active noise reducing filter apparatus for actively reducing noise d from at least one primary noise source reference signal x. The apparatus comprises a secondary source signal connector connected to a secondary source generating secondary noise y based on a secondary signal u for reducing said primary noise d. A sensor connector is connected to a sensor for measuring said primary and secondary noise as an error signal e. A reference signal connector receives the reference signal x, and a control filter W receives the reference signal x and calculates a control signal for providing the signal u. An adaptation circuit receives said error signal e and reference signal x and adapts the control filter W. The adaptation circuit adapts the filter W using a representation of said secondary source including a secondary source transfer function G of said secondary source and an additional damping for providing improved stability. |
申请公布号 |
WO2012074403(A3) |
申请公布日期 |
2012.11.15 |
申请号 |
WO2011NL50828 |
申请日期 |
2011.12.01 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO;BERKHOFF, ARTHUR PERRY;WESSELINK, JOHAN |
发明人 |
BERKHOFF, ARTHUR PERRY;WESSELINK, JOHAN |
分类号 |
G10K11/178 |
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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