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首页> 外文会议>European Conference on Speech Communication and Technology v.3; 20010903-20010907; Aalborg; DK >Implementation Effective One-Channel Noise Reduction System
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Implementation Effective One-Channel Noise Reduction System

机译：实施有效的单通道降噪系统

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摘要

This contribution addresses the problem of additive noise reduction using one-channel noise suppression system. A new implementation effective method is suggested and evaluated. The method consists of two independent parts. The noise estimation part is based on the noise matched filter producing an estimation of background noise without the need of a voice activity detector The noise reduction part uses short-time spectral attenuation technique. The main idea reducing computational costs lies in the use of reduced number of frequency bands for computation of attenuation factors. Except of reduced number of operations this approach decreases fluctuations of estimated spectral gains, and therefore the speech distortion is low. Thus the suggested system eliminates the need of any enhanced speech postprocessing. A new effective approach is used for the inverse frequency transformation. In spite of the simplicity of the suggested method its performance is comparable with other existing one-channel noise reduction methods.
机译：该贡献解决了使用单通道噪声抑制系统来减少附加噪声的问题。提出并评价了一种新的有效实施方法。该方法包括两个独立的部分。噪声估计部分基于噪声匹配滤波器，无需语音活动检测器即可产生背景噪声估计。噪声降低部分使用短时频谱衰减技术。减少计算成本的主要思想在于使用减少的频带数量来计算衰减因子。除了减少操作次数之外，该方法还减少了估计频谱增益的波动，因此语音失真较低。因此，所建议的系统消除了对任何增强的语音后处理的需求。一种新的有效方法用于逆频率变换。尽管建议的方法简单，但其性能可与其他现有的单通道降噪方法相媲美。

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