Research on Active Noise Reduction Systems at Building Openings
DOI:
https://doi.org/10.53469/jrse.2024.06(12).04Keywords:
Multi-channel FxLMS algorithm, Building openings, Active Noise Cancellation System DesignAbstract
This paper proposes an active noise reduction system design based on a digital signal processing (DSP) platform to address the impact of external noise on the indoor environment. The system is specially designed to be installed in the openings of a building and adopts the FxLMS (Filtered-x Least Mean Squares) algorithm to control the intrusion of noise effectively. By comprehensively considering the design of the hardware system and software systems' design, this paper verifies the feasibility of the proposed active noise reduction system and discusses its noise reduction performance in depth. Through experiments, this paper analyses the effect of secondary acoustic feedback on the system performance and the coherence between the reference signal and the error signal on the impact of the multi-channel active noise cancellation system. This paper provides a practical basis for further developing active noise reduction technology in practical applications.
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Copyright (c) 2024 Ruilin Mu, Linlang Wu, Peijie Yang, Longjiu Zheng, Zhaolong Fang
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
