A weighted multichannel Wiener filter for multiple sources scenarios
A weighted multichannel Wiener filter for multiple sources scenarios
复制标题
适用于多源场景的加权多通道维纳滤波器
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
I. Cohen
中科院分区：
文献类型：
--
作者：
S. Markovich;S. Gannot;I. Cohen
考虑混响外壳中 P 扬声器被 M 麦克风阵列接收的场景。我们扩展了单源语音失真加权多通道维纳滤波器（SDW-MWF）来处理多个说话人。通过引入 P 个权重来扩展均方误差 (MSE)，每个权重控制其中一个源的失真。 P 权重可以进一步控制波束形成器 (BF) 的设计。所提出的 BF 的两个特殊情况是 SDW-MWF 和线性约束最小方差 (LCMV)-BF。我们对所提出的 BF 的性能进行了理论分析。最后，我们在实验研究中举例说明了所提出的方法控制各种扬声器的降噪（NR）和失真水平之间权衡的能力。
The scenario of P speakers received by an M microphone array in a reverberant enclosure is considered. We extend the single source speech distortion weighted multichannel Wiener filter (SDW-MWF) to deal with multiple speakers. The mean squared error (MSE) is extended by introducing P weights, each controlling the distortion of one of the sources. The P weights enable further control in the design of the beamformer (BF). Two special cases of the proposed BF are the SDW-MWF and the linearly constrained minimum variance (LCMV)-BF. We provide a theoretical analysis for the performance of the proposed BF. Finally, we exemplify the ability of the proposed method to control the tradeoff between noise reduction (NR) and distortion levels of various speakers in an experimental study.