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Active Noise Control: A Review of the Field
AIHAJ, 1992Active noise control (ANC) is the application of the principle of the superposition of waves to noise attenuation problems. Much progress has been made toward applying ANC to narrow-band, low-frequency noise in confined spaces. During this same period, the application of ANC to broad-band noise or noise in three-dimensional spaces has seen little ...
R T, Gordon, W D, Vining
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Algorithms for Active Noise Control
2009The previous regulations about acoustics in buildings ruled only isolation, forgetting other important subjects. The new code in Spain, specifically the DB-HR document, also include the regulations of excessive noise reverberating that produces and causes discomfort in many cases non-speech intelligibility, this circumstance is crucial in certain areas.
M. Dolores Redel-Macías +3 more
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ACTIVE NOISE CONTROL OF AIR CONDITIONING SYSTEM NOISE
Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015), 2023A HVAC (Heat Ventilation Air Condition) system of the passenger seat in the autonomous bus is used for heating and cooling of the seat. The compressor of the HVAC system generates the operating noise, and the noise makes passengers annoyance. The frequency spectrum of the compressor noise composes of operating frequency and its harmonics components ...
Orhun Okcu, Kanghyun An, Sangkwon Lee
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Active Control of Broadband Noise
2006 IEEE International Conference on Systems, Man and Cybernetics, 2006This paper investigates the performance of active control for broadband disturbance using maximum pressure minimization. The theory and simulations of active control using single-channel, two-channel and three-channel systems are presented. Constrained minimisation of the pressure is introduced, to achieve control over the pressure in both frequency ...
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Active Control Of Structure-Borne Noise
Journal of Sound and Vibration, 1994Abstract The successful practical application of active noise control requires an understanding of both its acoustic limitations and the limitations of the electrical control strategy used. This paper is concerned with the active control of sound in enclosures. First, a review is presented of the fundamental physical limitations of using loudspeakers
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The Journal of the Acoustical Society of America, 1995
The control of noise emanating from engines and their exhaust systems is a difficult problem to overcome in a cost effective way. The noise may be reduced by the introduction of a fluid into the exhaust system such that the fluid is heated and expands rapidly producing sound and vibration which is in antiphase to the noise and vibration produced by the
Martin J. Moody, Alan V. Yorke
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The control of noise emanating from engines and their exhaust systems is a difficult problem to overcome in a cost effective way. The noise may be reduced by the introduction of a fluid into the exhaust system such that the fluid is heated and expands rapidly producing sound and vibration which is in antiphase to the noise and vibration produced by the
Martin J. Moody, Alan V. Yorke
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The Journal of the Acoustical Society of America, 1992
An active noise control system for controlling noise propagated through a duct comprises a first microphone located to receive the propagated noise at a point in a plane perpendicular to the length of the duct. A loudspeaker is located substantially at that plane for introducing sound into the duct.
John W. Edwards, Nicolaas M. J. Dekker
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An active noise control system for controlling noise propagated through a duct comprises a first microphone located to receive the propagated noise at a point in a plane perpendicular to the length of the duct. A loudspeaker is located substantially at that plane for introducing sound into the duct.
John W. Edwards, Nicolaas M. J. Dekker
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Active noise control of transformer noise
Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137), 2002Acoustic noise generated by transformers is a serious form of environmental pollution and it affects people's lives. Different methods have been suggested to reduce this form of pollution. This paper describes the implementation of a DSP based active noise control (ANC) system. Based on the theoretical result, different noise control systems were built
C. Teoh +4 more
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A Modern Control Approach to Active Noise Control
Journal of Dynamic Systems, Measurement, and Control, 1993Active noise control systems currently in use and/or described in the research literature are typically based on adaptive signal processing theory or, equivalently, adaptive feedforward control theory. This paper presents a modern control approach to the problem of active noise cancellation in a three-dimensional space. The controller is designed based
Shoureshi, R. +3 more
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Effects of active noise cancelling headphones on speech recognition
Applied Acoustics, 2020Dong Zhang, Xiaojun Qiu
exaly