The main works in this thesis as follow: 1 the basic knowledge of audio-visual speech recognition is studied, and the design is proposed for audio-visual vehicle control simulation system.
本文主要工作如下：(1)论述了双模态语音识别基本原理及相关技术，并提出了双模态车载语音控制仿真系统的设计方案。
The experiments also show that the audio-visual continuous speech recognition system is robust in noisy environments.
基于特征口形的音频-视频混合连续语音识别系统具有很好的抗噪性。
Lip is one of the most important facial features, and plays key roles in a variety of fields such as audio-visual speech, authentication, lip synchronization, face recognition, etc.
嘴唇是人脸特征的重要组成部分，在音视频识别、认证、嘴唇同步、人脸识别等方面都很重要。
However, audio-recognition system only USES the audio information of speech, and ignores the visual features of it. Under the noise circumstance, the recognition rate declines so much.
但语音识别系统忽略语言的视觉特性，仅仅利用听觉特性，使得语音识别系统在噪声环境下，识别率大大下降。
The experiments also show that the audio-visual continuous speech recognition system is…
基于特征口形的音频-视频混合连续语音识别系统具有很好的抗噪性。
The experiments also show that the audio-visual continuous speech recognition system is…
基于特征口形的音频-视频混合连续语音识别系统具有很好的抗噪性。
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