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Abstract
摘要: 针对麦克风阵列信号子空间语音增强算法的不足, 结合人耳的听觉掩蔽效应, 提出了改进的信号子空间算法. 提出了通过置信度判断来确定噪声子空间维度的方法, 在噪声子空间上, 通过条件概率的方法估计出噪声功率谱. 在此基础上, 结合人耳的听觉掩蔽效应给出了线性滤波器的一种合理估计. 实验结果表明所提的方法相对于传统算法, 更有效地抑制了噪声, 在多项语音质量评价指标上都有明显的改进. 关键词: 语音增强 / 信号子空间 / 麦克风阵列 / 听觉掩蔽效应 / 特征值分解
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