摘要
本文介绍了一种基于功率谱减的方法来增强带有白噪声的语音信号．过量功率谱减是语音增强的一个有效的方法，其处理后产生的纯音噪声采用中心限幅的方法可以很好地得到抑制．本文中对-8dB-＋3dB的汉语语句处理，信噪比可提高6dB－10dB．
This paper describes a method for enhancing speech degraded by white noise, based on the power spectrum subtraction. The Subtraction of the noise power spectrum over-estimate is an effective method. A new noise appearing in the processed signal, referred to as 'music noise', can be effectively eliminated by using 'center-clipping process'. In experiment, sentences of Chinese with about -8dB-+3dB signal-to-noise ratio was processed and improved up to 6dB-10dB.
出处
《应用声学》
CSCD
1995年第5期13-16,共4页
Journal of Applied Acoustics
关键词
低信噪比
语音增强
功率谱
声学测量
Low signal-to-noise ratio, Speech enhancement, The power spectrum
