The idea behind active noise-cancellation goes back to the 1950s.
消除有源噪声的想法可以追溯到上世纪50年代。
So this thesis studies the active noise control technique in the cabins.
为此本文对舱室空间内的有源噪声控制技术进行了研究。
The problem of active noise control of interior sound field is investigated.
本文对室内声场的有源控制问题进行了探讨。
Secondary path modeling is a key issue of adaptive active noise control (AANC) system.
次级通道建模是自适应主动噪声控制(AANC)系统的一个关键问题。
To reduce helicopter cabin noise, an active noise control methodology is investigated.
为消减直升机舱室噪声，对有源消声技术进行了研究。
The effect of active noise barrier was influenced by the locations of the error sensors.
有源控制系统中误差传感器的位置对整个系统的降噪效果有较大的影响。
In this paper, a method of neuro-adaptive active noise control (ANC) system is presented.
提出一种神经自适应噪声有源控制(anc)的方法。
It is very important to model the secondary paths in adaptive active noise control algorithms.
误差通道建模是实现自适应有源噪声控制算法的重要环节。
The optimum design of the controller of compound active noise cancellation earmuff is discussed.
探讨了复合式有源消声耳罩的控制器的优化设计方法。
Hearing protectors - Safety requirements and testing - Part 5: active noise reduction ear-muffs.
听力保护器。安全要求和试验。第5部分：有源降噪耳罩。
Noise suppression is classified into two classes: Passive Noise Control and Active Noise Control.
噪声抑制方法可以分为两大类：被动噪声抑制和主动噪声抑制。
Active noise control experiments were performed in both a semi-anechoic chamber and an ordinary room.
本文分别在半消声室和普通房间进行有源消声实验。
A modified algorithm of an Active Noise Control system based on Frequency-Selective Filter (FSFANC) is proposed.
提出了一种改进的选频有源噪声控制(FSFANC)算法。
In the active noise control system we apply neural network control method and derive neural network BP algorithm.
在噪声主动控制系统中采用神经网络控制方法，给出了神经网络BP算法的一种变异算法。
In active noise control (ANC), the FXLMS algorithm has been widely used for its simplicity and low computational load.
自适应噪声主动控制(ANC)中，由于FXLMS算法较为简单、计算量较小，使之得到广泛应用。
Active noise control technology has recently been used to increase the sound transmission loss of double wall structures.
噪声主动控制技术目前已用增加双隔板结构对声音进行衰减。
The full-size, around-ear Bluetooth headphones feature active noise cancellation and double as a headset for making phone calls.
这种大尺寸的包耳式蓝牙耳机能有效地隔绝噪音，并且还能作为打电话用的耳麦。
The active noise control system design has been becoming one of important research contents in the field of the active noise control.
基于自适应控制策略的噪声主动控制系统设计已经成为了噪声主动控制领域的重要研究内容之一。
The acoustic character controlled by the active noise attenuation system in ducts has been analyzed in detail on premise of semi-infinite ducts.
在假设半无限长管道的前提下，详细分析了噪声有源控制系统作用下的管道声场特性。
Then the multi-channel self-adaptive active noise control system is designed, and the noise control tests are processed in a close circumstance.
设计多通道自适应有源噪声控制系统，利用滤波-X LMS算法进行封闭环境的噪声控制实验。
He has also made some remarkable achievements in the field of active noise control and nonlinear acoustics, and is still active in research work.
他还积极从事有源噪声控制和非线性声学的研究，并取得了显著成果。
Design principle and implementation of an adaptive active noise controller is proposed in this paper. Hardware structure and software flow are given.
论述了自适应有源噪声控制器的设计原理及实现方法，给出了通用型自适应有源噪声控制器的硬件结构和软件流程。
In the implementation of active noise control, it is very important for accurate secondary paths modeling to keep the stability of the control system.
在有源噪声控制系统实现的过程中，次级通路建模精度对有源控制算法实现、系统的稳定性及降噪量都有重要影响。
Adaptive active noise cancellation based on the adaptive control strategy has become one of important researches in the field of active noise control.
基于自适应控制策略的有源噪声抵消技术已经成为有源噪声控制领域的重要研究内容之一。
So an active noise cancellation (anc) system for helicopter cabin noise based on adaptive internal model control technique, is developed in laboratory.
从而在实验室构造了一套基于自适应内模控制技术的主动消声系统(anc)。
It is important to understand the phase characteristics of electro-acoustic device for the design and effect analysis of active noise cancellation controller.
了解电声器件的相位特性对有源消声控制器的设计及消声效果分析具有重要作用。
An active noise self-tuning model predictive control approach is derived. An on-line learning algorithm is proposed for adjusting the uncertain model parameters.
将预测控制方法应用到有源噪声控制领域，给出了一种参数在线自适应算法，该算法的收敛速度不受次级声路径响应的影响。
Cushioned ear pads block out most external noise, and active noise-canceling technology scrubs out anything else that could get between you and a good audiobook.
耳麦处都配有软垫，能够阻挡外部噪音。先进的防噪音技术能够使您与音乐零距离接触。
Cushioned ear pads block out most external noise, and active noise-canceling technology scrubs out anything else that could get between you and a good audiobook.
耳麦处都配有软垫，能够阻挡外部噪音。先进的防噪音技术能够使您与音乐零距离接触。
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