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A Novel Single-Channel Speech Enhancement Method Based on Computational Auditory Scene Analysis
Author(s): 
Pages: 50-54
Year: Issue:  2
Journal: Audio Engineering

Keyword:  语音增强计算听觉场景分析线索掩蔽;
Abstract: 基于对计算听觉场景分析(Computational Auditory Scene Analysis,CASA)算法思想的研究,提出了一种单通道语音增强方法.通过分析白噪声、风噪声、周期性噪声三类典型噪声和一般语音信号的频谱特点,构造适合的信号提取特征作为线索,判别出信号时频单元中的主要信号成分,然后对各时频单元乘以相应的衰减系数以掩蔽噪声成分.对仿真实验结果的客观测试和非正式听音测试表明,相对于常用的多子带谱减法和维纳滤波法,所提出的算法能够更有效地抑制白噪声、风噪声、周期性噪声等背景噪声.
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