有源降噪

关于单极子次级声源管道有源降噪能量机制的理论分析

A theoretical explanation of the energy mechanism in active noise reduction in a duct with a monopole secondary source

管道有源降噪系统中自适应控制的计算机仿真

Computer Simulation of Adaptive Control of Active Noise Reduction System in a Duct

RBF网络在履带车辆舱室内有源降噪的实验研究

Active Noise Control in Military Vehicle Cabin Using RBF Neural Network

管道及局部空间有源降噪系统几种算法的比较及其DSP实现

Comparison of Several Algorithms Used in Active Noise Control in Ducts and in Enclosure and Their DSP Implementations

封闭空间声场内的有源降噪（ANC）是现代噪声控制领域的研究热点，其中对结构声辐射声场的有源控制的研究更具有实际应用价值。

The active noise control ( ANC ) of enclosed sound field has long been an attractive task in the field of modern noise control , especially the active control of structure-borne noise has practical value .

最优配置下，单通道和双通道有源降噪系统的有效降噪频率上限分别为820Hz和1000Hz。

With the optimal configurations , the frequency ranges of effective control of the single and dual channel system are up to 820 and 1000 Hz , respectively .

高效管道有源降噪系统&理论与试验

Active Attenuation of High Efficiency for Noise in Ducts & Theory and Experiment

噪声的危害与控制气流管道有源降噪研究

Active attenuation of noise in flow ducts

机车驾驶室中自适应有源降噪系统的研究

Study on Noise Reduction in Tractor Cab Adaptive active noise control in driver 's cab

空间自适应有源降噪方法

Adaptive Active Noise Control in Space

有源降噪技术的应用与系统实现

The Application and the Systematic Realization or the Technology of the Reduction of Noise with Source

有源降噪耳罩噪声的危害与控制

Active Noise - reduction Earmuff

可以用环境误差信号来控制自适应滤波器参数，自动跟踪环境的变化并自动调节自适应滤波器参数，从而保证有源降噪系统具有优化的性能，在噪声控制上引起人们的极大重视。

The filter parameters are automatically adjusted by errors due to environmental changes . In this way , the system performance is optimized .

结果表明，无论是单通道还是双通道有源降噪系统，次级声源和误差传声器的最优位置均分别为窗户外开口和窗户内开口处。

The results show that either for the single or dual channel system , the optimal positions for the secondary sources and the error sensors are at the external and internal opening , respectively .

本文在对声学理论和有源降噪机理研究的基础上，提出了天然气增压站的主动降噪方案，对主动降噪原理和控制算法进行了研究和仿真，并根据算法进行了相应的系统设计。

In this thesis , based the study of acoustics theory and ANC ( Active Noise Control ) mechanism , the precept of the Nature Gas Booster Station Noise Active control is discussed . The active algorithm is established and simulated .

管道有源降噪器的控制系统根据传声器检测到的噪声信号，经过加工处理，产生激励次级声源的信号，使其产生的声波在下游与原来的噪声相抵消。

The control system of active noise attenuators in ducts . by processing the noise signal detected by the microphones , generates a signal exciting the secondary sound sources to radiate a sound wave cancelling the primary sound wave in the downstream .

实验结果表明，次级通路时延影响着管道噪声有源控制的降噪频率以及降噪带宽。

It is shown that the delay of secondary path influences not only the frequency but also the bandwidth of active duct noise control .