摘要
目的:研究基于信号子空间的语音增强方法。方法:利用Cool Edit Pro2.0软件录制语音,加入各种噪声,利用Mat-lab软件进行分析、处理。结果:观察语音信号波形图和语谱图,利用信号子空间的分解方法,可使信噪比大大增加。结论:基于子空间的语音增强方法在主观听觉与客观指标上均得到了令人满意的效果。
Objective： To study speech enhancement method based on the signal sub-space. Methods： Speeches to which various noises were added was recorded by Cool Edit Pro2. 0,and analyzed and then dealt with by Matlab. Results： The ratio of noise and signal can be improved a lot by reading speech waveform and speech spectrum and using the sub-space decomposition. Conclusion： The method of speech enhancement based on signal sub-space has achieved satisfying effects in both subjective hearing and objective quota.
出处
《数理医药学杂志》
2008年第3期265-267,共3页
Journal of Mathematical Medicine
基金
武警医学院院级科研课题(WY2005-13)
关键词
子空间
语音增强
语谱图
sub-space enhancement
speech enhancement
speech spectrum
