arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.14223eess.AScs.SD
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大词汇量视听语音识别的多模态集成

Multimodal Integration for Large-Vocabulary Audio-Visual Speech Recognition

Institute of Communication Acoustics, Ruhr University Bochum(波鸿鲁尔大学通信声学研究所)

Wentao Yu, Steffen Zeiler, Dorothea Kolossa

摘要:

对于许多小词汇量和中等词汇量的任务,视听语音识别可以显着提高识别率相比,只有音频系统。然而,关于多模态信息的最佳组合策略仍然存在争议,这应该允许将这些收益转化为大词汇量识别。虽然使用动态流加权的状态后验概率水平上的集成对于小词汇量系统几乎普遍有用,但是在大词汇量语音识别中,识别精度仍然难以提高。在下文中,我们特别考虑了LRS2数据库的大词汇量任务,并研究了广泛的集成策略,将早期集成和端到端学习与许多版本的混合识别和动态流加权进行了比较。一个方面,这是提供了很多好处,这里,是使用动态流可靠性指标,这使得混合架构,以强烈的利润,包括视觉信息,只要音频通道失真,甚至轻微。

英文摘要:

For many small- and medium-vocabulary tasks, audio-visual speech recognition can significantly improve the recognition rates compared to audio-only systems. However, there is still an ongoing debate regarding the best combination strategy for multi-modal information, which should allow for the translation of these gains to large-vocabulary recognition. While an integration at the level of state-posterior probabilities, using dynamic stream weighting, is almost universally helpful for small-vocabulary systems, in large-vocabulary speech recognition, the recognition accuracy remains difficult to improve. In the following, we specifically consider the large-vocabulary task of the LRS2 database, and we investigate a broad range of integration strategies, comparing early integration and end-to-end learning with many versions of hybrid recognition and dynamic stream weighting. One aspect, which is shown to provide much benefit here, is the use of dynamic stream reliability indicators, which allow for hybrid architectures to strongly profit from the inclusion of visual information whenever the audio channel is distorted even slightly.

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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