| 向大威,顾亚平,许伟杰,李秀红.视听系统声干扰的自适应抵消[J].,1997,16(4):1-6,26 |
| 视听系统声干扰的自适应抵消 |
| Self-adaptive cancellation of acoustic interference produced by an AV system |
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| 中文摘要: |
| 对一个用语音遥控的视听系统而言，视听系统本身所发出的声音常常造成语音识别的错误．本文所采用的自适应声干扰抵消技术能有效地降低这种声干扰．基于自适应声干扰抵消最佳性能的分析，导出了抵消性能与权系数的个数以及混响时间的表达式，并实时地实现了带有1024个权系数的自适应声干扰抵消系统．在一般居室中，声干扰的抵消可达26dB． |
| 英文摘要: |
| For an AV system under the remote control of speech, errors of speechrecognition are often observed caused by the sound produced by the AV system itself.Self-adaptive acoustic interference cancellation is used to reduced the acousticsinterference effectively. Based on the analysis of the optimum cancellation, therelations between cancellation and weight number or reverberation time have beenderlved. A real-time self-adaptive acoustic interference cancellation system with 1024weights is realized. In an ordinary living room, 26 dB acoustic interferencecancellation could be obtained. |
| DOI：10.11684/j.issn.1000-310X.1997.04.001 |
| 中文关键词: 视听系统声干扰 自适应抵消 实时 高速数字信号处理 分组最小均方算法 |
| 英文关键词: Acoustics interference produced by AV system Self-adaptive interference cancellation Real-time High-speed digital signal processing Grouped LMS algorithm |
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