The system performance is satisfactory when the environment is also quiet , but degrades quickly in noisy environments 如果实际环境也是安静的，则语音识别系统可以令人满意地工作。
In the recent years large progress has been made in speech auto - recognition ; many voice speech systems have been developed 近年来，自动语音识别研究取得了突破性的进展，出现了许多不同类型的语音识别系统。
Voice - recognition systems have improved somewhat in recent years , but are still not reliable enough for entering a text message or an e - mail 语音识别系统近年来有所改进，但要用它来输入短信或电子邮件还是不大可靠。
Considering the practical application , how to improve the performance of speech recognition system is a important issue in speech recognition technology 实用语音识别系统在噪声环境中的应用也是一个重要的研究课题。
Recall that the voice recognition system must know the words specifically the pronunciation of words for them to be recognized or spoken 请回忆一下我们刚才说过，语音识别系统必须知道它们要识别或要说的词（特定是词的发音） 。
The accuracy of a speech recognition system in actually noisy environment is seriously affected by the additive noise and the channel distortions 实际环境中的背景噪声和传输通道变化所引起的畸变严重影响了语音识别系统的性能。
To verify viterbi beam search algorithm and pruning strategies , we set up a small english csr system called ask the way ( atw ) 为了验证viterbibeam搜索算法的有效性，本文设计了可行的viterbibeam搜索策略，构建了小型英文连续语音识别系统atw ( asktheway ) 。
Part ii describes algorithmic aspects of speech recognition systems including pattern classification , search algorithms , stochastic modelling , and language modelling techniques 第二部分讲述语音识别系统中的有关算法，包括模式分类，查找算法，随机模型，语言模型等技术。
Through the test and research of the actual speech recognition system , it carries out the fundamental and exploring research for the further application of speech recognition system 本文通过对实际语音识别系统的测试和研究，为进一步开发实用性语音识别系统的工作做了基础和探索性的工作。
Speech enhancement as the front - end processing module is used to improve the signal - to - noise ratio ( snr ) of the input signal for recognition in the latter stages 为了让语音识别系统在安静的环境和有噪声的环境中都获得令人满意的工作性能，研究了一个将语音增强器和语音识别器级连起来的系统。
