发明名称 |
Quiet zone control system |
摘要 |
An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a quiet zone. The anti-noise signal is generated with an adaptive filter having filter coefficients. The coefficients of the adaptive filter may be adjusted based on a first filter adjustment from a first listening region, and a second filter adjustment from a second listening region. A first weighting factor may be applied to the first filter adjustment, and a second weighting factor may be applied to the second filter adjustment. The first and second weighting factors may dictate the location and size of the quiet zone as being outside or partially within at least one of the first listening region and the second listening region. |
申请公布号 |
EP2239729(A2) |
申请公布日期 |
2010.10.13 |
申请号 |
EP20100158681 |
申请日期 |
2010.03.31 |
申请人 |
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED |
发明人 |
WERTZ, DUANE;SHRIDHAR, VASANT |
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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