第四讲语音信号处理的现状和展望

文章简要介绍了“语音信号处理”这一分支学科形成和发展的历史过程．指出了它在现代信息科学技术中的地位和作用．介绍了语音信号处理在应用领域的一些重要课题，如语音的低速率编码，语音的规则合成和文一语转换系统，语音识别和人一机语音对话等，这些仍然是当前研究的热点．文章最后展望了语音信号处理的发展前景，指出在这个领域还有很多难题等待人们去研究探索．

Current status and prospects of speech signal processing

The history of speech signal processing and its status in modern informatics and information technology is reviewed. In practical applications, key techniques such as low bit rate speech encoding, speech synthesis by rule, text to speech conversion, speech recognition, speech dialogue between man and machine are still hot topics for current research. Though much has been achieved in past years, there are many problems to be solved.Future developmentsof speech signal processing are identified.