arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.03141eess.AScs.SD
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一种端到端的在线多通道语音分离系统

An End-to-end Architecture of Online Multi-channel Speech Separation

Microsoft STCA Beijing(微软亚太研发集团北京)

Jian Wu, Zhuo Chen, Jinyu Li, Takuya Yoshioka, Zhili Tan, Ed Lin, Yi Luo, Lei Xie

摘要:

多说话人语音识别突破了现有语音识别系统中说话人为单个说话人的假设,成为会话转录的关键挑战之一。语音分离被认为是解决这个问题的一种方法。在此之前,我们介绍了一个系统,称为dunmixing,固定波束形成器和提取(UFE),这被证明是有效的,在解决会话转录的语音重叠问题。在UFE中,输入混合信号由固定波束形成器处理,然后进行神经网络后滤波。虽然取得了可喜的成果,该系统包含多个单独开发的模块,导致潜在的次优性能。在这项工作中,我们介绍了一个端到端的建模版本的UFE。为了使梯度传播的所有方式,提出了一个注意力选择模块,其中注意力权重是学习每个波束形成器和空间特征在空间上采样。实验结果表明,该系统在离线评估中与原始的基于单独处理的流水线实现了可比较的性能,同时在在线评估中产生了可扩展的改进。

英文摘要:

Multi-speaker speech recognition has been one of the keychallenges in conversation transcription as it breaks the singleactive speaker assumption employed by most state-of-the-artspeech recognition systems. Speech separation is consideredas a remedy to this problem. Previously, we introduced a sys-tem, calledunmixing,fixed-beamformerandextraction(UFE),that was shown to be effective in addressing the speech over-lap problem in conversation transcription. With UFE, an inputmixed signal is processed by fixed beamformers, followed by aneural network post filtering. Although promising results wereobtained, the system contains multiple individually developedmodules, leading potentially sub-optimum performance. In thiswork, we introduce an end-to-end modeling version of UFE. Toenable gradient propagation all the way, an attentional selectionmodule is proposed, where an attentional weight is learnt foreach beamformer and spatial feature sampled over space. Ex-perimental results show that the proposed system achieves com-parable performance in an offline evaluation with the originalseparate processing-based pipeline, while producing remark-able improvements in an online evaluation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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