关键词: 语音识别, 实用环境, 稳健性, 信道适应, 说话人自适应

Abstract: The robustness of speech recognition system in real environment is the key problem in the application of speech recognition technique. The kernel problem is how to overcome the mismatching of acoustic feature and model between real and clean environments, which involves the important techniques on noise environment compensation, channel adaptation and speaker adaptation etc. This paper reviews the main methods, principles and ad-hoc research techniques of robust researches, analyzes the adaptation techniques of acoustic model and language model in real environment, and proposes the recent prospect of research interests in real-world environment speech recognition.

Key words: Speech recognition, Real-world environment, Robustness, Channel adaptation, Speaker adaptation