| 自适应抗噪声送话器的算法研究 |
| |
| 引用本文： | 倪志明,田静. 自适应抗噪声送话器的算法研究[J]. 电声技术, 2000, 0(2): 13-17 |
| |
| 作者姓名： | 倪志明 田静 |
| |
| 作者单位： | 中国科学院声学研究所,北京,100080 |
| |
| 摘 要： | 介绍了一种改进后的ＬＭＳ算法，使自适应滤波器权值更新的步长随着系统输出信号功率的变化而变化。在效果评价时提出了计算语音信号信噪比提高量的一个简单方法，即通过控制前后语音间隙的噪声能量的对比得出结果。
|
| 关 键 词： | 自适应滤波 自适应噪声抵消 LMS算法 送话器 |
| 修稿时间： | |
Algorithm Research of Adaptive Anti-noise Telephone Transmitter |
| |
| NI Zhi-ming,TIAN Jing. Algorithm Research of Adaptive Anti-noise Telephone Transmitter[J]. Audio Engineering, 2000, 0(2): 13-17 |
| |
| Authors: | NI Zhi-ming TIAN Jing |
| |
| Affiliation: | NI Zhi-ming;TIAN Jing |
| |
| Abstract: | In this paper the improved LMS algorithm (weighted sum) is introduced, which enables the stepwidth of regeneration of adaptive filter weighted value to change along with the variationof output signal power of the system. When estimating the effect a simple method, i.e. controlling thecomparison of noise energy of two voice gaps, which can be used to calculate SNR increase of speechsignal, is presented. |
| |
| Keywords: | adaptive filter adaptive noise cancellation LMS algorithm speech noise Coherence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
