| 发明名称 | Active noise reduction | ||
| 摘要 | A noise reducing sound reproduction system comprises a loudspeaker that is connected to a loudspeaker input path and that radiates noise reducing sound. A microphone is connected to a microphone output path and picks up the noise or a residual thereof. An active noise reduction filter is connected between the microphone output path and the loudspeaker input path, and the active noise reduction filter comprises at least one shelving filter. | ||
| 申请公布号 | US9099076(B2) | 申请公布日期 | 2015.08.04 |
| 申请号 | US201213656274 | 申请日期 | 2012.10.19 |
| 申请人 | Harman Becker Automotive Systems GmbH | 发明人 | Christoph Markus;Freundorfer Johann;Hommel Thomas |
| 分类号 | G10K11/178 | 主分类号 | G10K11/178 |
| 代理机构 | O'Shea Getz P.C. | 代理人 | O'Shea Getz P.C. |
| 主权项 | 1. A noise reducing system comprising: a loudspeaker that is connected to a loudspeaker input path and receives a loudspeaker input signal, and that radiates noise reducing sound; a microphone that is connected to a microphone output path and that picks up noise or a residual thereof and provides a sensed signal indicator thereof; and an active noise reduction filter that is connected between the microphone output path and the loudspeaker input path; wherein the active noise reduction filter comprises at least one shelving filter and at least one equalizing filter. | ||
| 地址 | Karlsbad DE | ||