利用位置估计进行船舶噪声低频线谱有源控制  

Active Control of Low Frequency Linear Spectrum in Vessel Noises by Estimating Receiver's Location

作　　者：郑援[1] 胡成军[1] 赵汉波 

机构地区：[1]海军潜艇学院,山东青岛266042

出　　处：《电声技术》2014年第2期55-59,共5页Audio Engineering

摘　　要：提出了一种基于接收点位置估计的船舶航行噪声低频线谱有源控制方法。利用船壳上布设的次级声源实现低频线谱的有源抵消,其信号处理使用了估计的接收点位置信息。通过仿真分析了位置估计误差对船舶航行过程中低频线谱信号有源降噪效果的影响。仿真结果表明,方位估计误差可控时该方法降噪效果良好。An approach to actively control the low frequency linear spectrum in vessel navigation noises is proposed. The approach relies on the introduction of a secondary noise-cancellation source which is fixed aboard and whose signal genera- tion uses the estimated location knowledge of the receiver. Simulations are conducted to analyze the noise-reduction effects under different location estimation errors. Simulation results show that satisfactory noise reduction region can be obtained using the approach while the bearing estimation error can be controlled.

关 键 词：船舶航行噪声 低频线谱 有源噪声控制 位置估计误差 

分 类 号：TB56[交通运输工程—水声工程]