A Research of the Application of the Active Noise Controller on Communication Systems

• Main Authors: Po-kai Chen, 程柏凱
• Other Authors: Chih-Ming Chen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/87vp27

碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === This thesis presents the design and application of an active noise controller, based on the adaptive filter theories, for communication systems. The main purpose is to eliminate outside stationary noises from the transmitting signal. Based on the wave synthesis theory, the system detects the characteristics of the noise and generates anti-noise signal such that destruction interference can occurs to the original noise. The mostly nonstaionary speech signals are hence retained and enhanced. As a result, the overall signal quality can be improved. For the realization of this system, a Nios II embedded processor as the system’s operation core. Through tests have been performed to evaluate the effectiveness of this system. By taking the advantage of the System-On-Programmable-Chip (SOPC) technology, the system can be built on FPGA chips.