Abstract
This article presents an improvement unvoiced replacement technique based on real time processing using Field Programmable Gate Array (FPGA) board. The Virtex-II Pro board which consists of XC2VP30 chip as central processor unit is used in this research. The XC2VP30 chip consists of 30,816 logic cells and also it can operate with external memory for parallel buffers where sampling data are stored. The experiment results show that this system can be function on real time system. It used only 4.17–50 ms for time processing which does not effect to delay time process on real time system. The XC2VP30 chip can be develop to use in speech compression by unvoiced replacement techniques base on real time processing. Moreover, the quality of the output speech signal is still similar to the original speech signal.
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