蔡野锋;叶超;马登永;沐永生;

• 1:中科上声(苏州)电子有限公司

摘要(Abstract)：

广义旁瓣抵消器由于实现结构简单在麦克风阵列算法中得到了广泛的应用。但是传统的广义旁瓣抵消器算法对导向矢量失配误差比较敏感，容易产生目标方向信号的自抵消现象。针对此问题，本文提出了一种改进算法，通过固定波束形成和自适应阻塞矩阵输出的信噪比乘积控制多输入抵消器的更新，降低目标方向信号的自抵消影响，提升语音质量。在8.5 m×8.0 m×3.0 m的普通会议室中，通过模拟不同方向的目标人声和噪声源，对算法进行了实验验证。实验结果表明，相比于传统算法，改进算法具有一定的鲁棒性，且选择阈值简单，可以在降噪量和语音质量方面都能得到提升。

关键词(KeyWords)： 广义旁瓣抵消器;麦克风阵列;鲁棒性;信噪比

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 蔡野锋;叶超;马登永;沐永生;

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