An ASIC design of real time speech recognition | |
| Author | Janwit Sriharuksa |
| Call Number | AIT Thesis no.ME-02-06 |
| Subject(s) | Application specific integrated circuits Speech perception |
| Note | A thesis report submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ME-02-06 |
| Abstract | This thesis presents a design of Speech Recognition System adopting the three approaches: Hidden Markov model approach, Linear predictive coding(LPC) analysis and Vector Quantization Methodology. The project is developed from the previous study by Dusadee Treeumnuk, "Implementation of Speech Recognition" which was aimed to design the system in chip that the pattern classifier was designed in a hardware implemented on FPGA. Whereas some parts of the system were designed into a software form such as endpoint detector, pattern training and Spectral Analysis. However, the result has proved that there are some drawbacks that need a further development This study puts focus mainly on how to design the whole system to be able to work real time. As a result, the Spectral Analysis was designed as a hardware instead and works in accordance with Pattern Classifier of Dusadee's. The other parts are still in the form of software as previous designed by Dusadee. The whole system was designed by VHDL Language. Then, it was tested on FPGA. The new design, Spectral Analysis in hardware was tested to compare its results with the previous one, software, and the results are identical. Finally, the entire system was tested with the 20 English words. The Spectral Analysis and Recognizer are implemented completely on FPGA with recognition efficiency of 90.5%. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ME-02-06 |
| Type | Thesis |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Lertsak Lekawat; |
| Examination Committee(s) | Satien Triamlumlerd;Chumnarn Punyasai; |
| Scholarship Donor(s) | National Electronics and Computer Technology Center; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |