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首页> 外文期刊>Journal of vibration and control: JVC >A two-channel feedback active noise control system with delayless subband architecture to reduce compressor noise of an enclosed heating, ventilation and air conditioning unit
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A two-channel feedback active noise control system with delayless subband architecture to reduce compressor noise of an enclosed heating, ventilation and air conditioning unit

机译：具有无延迟子带架构的两通道反馈有源噪声控制系统，可减少封闭式供暖，通风和空调装置的压缩机噪声

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摘要

This paper discusses the development of an active noise control (ANC) system to cancel compressor noise produced by a commercially available heating, ventilation and air conditioning unit enclosed within a closet. Feedback ANC architecture that requires no reference microphone is used for cost-effectiveness. A novel delayless subband adaptive filtering technique is used to reduce computational complexity of the algorithm and improve system performance. Finally, the system is extended to two-channel architecture in order to provide an additional zone of silence. Using an experimental setup, the noise from the compressor at two error microphone positions is recorded and all necessary secondary path measurements are taken. Noise attenuation levels of 11dB and 21dB are obtained at the two error microphones, resulting in an average attenuation of 18dB.
机译：本文讨论了一种主动噪声控制（ANC）系统的开发，该系统可消除壁橱内装有市售的加热，通风和空调装置所产生的压缩机噪声。不需要参考麦克风的反馈ANC体系结构可实现成本效益。一种新颖的无延迟子带自适应滤波技术被用于降低算法的计算复杂度并提高系统性能。最后，该系统扩展到两通道架构，以提供额外的静音区域。使用实验设置，记录来自压缩机在两个错误麦克风位置的噪声，并进行所有必要的辅助路径测量。在两个误差麦克风处获得11dB和21dB的噪声衰减水平，平均衰减为18dB。

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