| 自适应线谱增强器在音频信号增强中的应用研究 |
| |
| 引用本文： | 代光辉. 自适应线谱增强器在音频信号增强中的应用研究[J]. 光机电信息, 2010, 27(1): 29-32 |
| |
| 作者姓名： | 代光辉 |
| |
| 作者单位： | 重庆工商大学计算机科学与信息工程学院,重庆,400067 |
| |
| 摘 要： | 本文对自适应线谱增强器（ALE）稳态的频率特性及其与输入信噪比、自适应滤波器长度和采样率的关系进行了详细分析。明确给出了AI正参数选择的原则及信号信噪比（SNR）提高的方法。在MATLAB环境下将ALE应用于音频信号增强，选择信号延迟D=100和用于自适应线性估计的滤波器长度L=32。使用块LMS=32自适应算法进行了仿真试验。仿真结果表明，AIE系统不仅提高了宽带噪声中谐波信号的信噪比．而且还具有独特的滤波功能。
|
| 关 键 词： | 自适应线谱增强器 音频信号增强 MATLAB仿真 |
Application of the Adaptive Line Enhancer in Sound Enhancement |
| |
| DAI Guang-hui. Application of the Adaptive Line Enhancer in Sound Enhancement[J]. OME Information, 2010, 27(1): 29-32 |
| |
| Authors: | DAI Guang-hui |
| |
| Affiliation: | DAI Guang-hui (Computer Science and Information Engineering College, Chongqing Technology and Business University, Chongqing 400067, China) |
| |
| Abstract: | The steady frequency response function （FRF） of an adaptive line enhancer（ALE） and its relationship with input SNR, adaptive filter length and sampling rate were presented in this paper. The principle of ALE parameter selection was investigated and the signal-to-noise ratio （SNR） enhancement method was given clearly. The ALE system was used in sound enhancement in MATLAB and the simulation was made. Simulation results showed that the ALE system would not only improve the broadband noise SNR of harmonic signals, but also had an unique filtering function. |
| |
| Keywords: | Adaptive line enhancer Sound enhancement MATLAB simulation |
| 本文献已被 维普 万方数据 等数据库收录！ |
