Study on noise reduction system with tandem dual-microphone array

• Main Authors: Jian-Bin Chen, 陳建賓
• Other Authors: Yao-Tsung Huang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/90783869484091145003

碩士 === 高苑科技大學 === 電子工程研究所 === 98 === In this search, dual omni-directional MEMS microphones were used to compose a audio pick-up tandem array. An unique algorithm composed of a pre-processing unit and a normalized least-mean-square algorithm were applied for signal processing. The integration of both results in an excellent noise-reduction audio pick-up system. The contents of study included design of noise-reduction system, editing of signal processing algorithm, experiments on the performance of system in various noise-level, experiments on the performance of system in various kind of noise, directional pick-up characteristics, etc. It was shown the system we developed could depress the side-way noise up to 19dB, and be very robust to high level noise and also various kind of noise