The Research And Development Of Speech Recognition System Based On LD3320

In this paper, the analysis and comparison on the work flow and algorithm of Automatic Speech Recognition (ASR) are first discussed. Different kinds of ASR systems have been summarized. The vehicle ASR system and off-line system have been analyzed through a series of experiment. Some problems remaining have been discussed such as robustness, flexibility of interaction and edition of recognizing words.A human-computer interaction system for speech recognition has been introduced based on LD3320 with single chip microcomputer as a microprogrammed control unit (MCU) in this paper. For the hardware platform, the power is conserved and an EEPROM is connected as an external chip. It can also communicate with computer through serial port, so that users can easily change the orders and their length. It has met the basic demonds that a human computer interaction system needs to be more convenient and flexible.Finally a human computer interactive system is founded and a series of experiments have been done to evaluate the performance of this system, and factors have been learned to keep the system steady. The flexible system with orders easily trained and changed with the recognition rate over 90% is proved.