Implement an Indoor Low Frequency Noise Reduction System Based on FXLMS Algorithm

Abstract:

In order to solve the hazards of indoor low-frequency noise on the human body, the low-frequency noise reduction system is designed for a confined space by using the active control theory, and the process of adaptive noise elimination is achieved through the FX-LMS algorithm. The system hardware is integrated with the sound sensor, the complex programmable logic devices, the digital to analog converter and micro control unit to build the core circuit. Furthermore, the processing software of noise reduction is implemented by the FXLMS. Through the system test, the result shows that the noise reduction system can effectively reduce the low frequency noise intensity in the confined space.

• Periodical: Applied Mechanics and Materials (Volume 667)
• Pages: 440-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.667.440
• Online since: October 2014
• Authors: Bin Wu, Ji Tao Ma, Ping Wu
• Keywords: Active Noise Control, Analog to Digital Converter, Complex Programmable Logic Device, Digital to Analog Converter, Micro Control Unit

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