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HCSI Group is an important part of the Speech Laboratory in the computer science and technology department of tsinghua University. For a long time, the group has made a great effort on the study and the development of Acoustical model, Prosody learning and simulation, Automatic text analysis, Prosody description language for Chinese Speech, Digital coding/decoding technology, Multimedia communication technology and other associated kernel technologies. In 1989, the group firstly developed a database reading system with speech synthesis technology in China. It makes a great progress in the application of the Chinese speech synthesis system.
"Make computer speak naturally and smoothly just like a human-being" is always the goal of the group. The group has made a great effort on the research of the new models and technologies, and applied them to the TTS system. During recent years, the group has developed several practical system, such as the time domain TTS system (1992) and the TH-SPEECH system (1993), etc. At present, the TTS system has formed several versions. It can be run in different operating systems, DOS, Window95/98/NT, and Unix, and has been widely used in querying system of telephone, soundable electronic dictionary, manuscript verifying system, newspaper reading system, etc. Now, all members of the group are working hard to make more progress of TTS system, and make it intelligentized and more useful in network field.
The group has established the abroad affiliations with many universities and research institutions all over the world, and delivered many high-quality papers on many national and international journals and conferences. The members in group has been invited to visit many countries and regions, such as USA, Germany, Singapore, Hongkong, Taiwan, etc. Nowadays, the group still keeps the friendly cooperations with Lucent company, Dialogic company, Siemens company, Intel company and Microsoft company.
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