| 低信噪比下的语音增强处理 |
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| 引用本文： | 李国锋.低信噪比下的语音增强处理[J].应用声学,1995,14(5):13-16. |
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| 作者姓名： | 李国锋 |
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| 作者单位： | 南京市公安科学技术研究所!南京210001 |
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| 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。
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| 关 键 词： | 低信噪比 语音增强 功率谱 声学测量 |
Enhancement of low snr speech |
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| Li Guofeng.Enhancement of low snr speech[J].Applied Acoustics,1995,14(5):13-16. |
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| Authors: | Li Guofeng |
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| Institution: | Nanjing Public Security Science and Technology Institute, Naniing 210001 |
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| Abstract: | 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. |
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| Keywords: | Low signal-to-noise ratio Speech enhancement The power spectrum |
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