Active noise control in acoustic shutters

Nuñez, Israel Jorge Cárdenas; Miranda, João Gabriel Oliveira de; Duarte, Marcus.V.

doi:10.1016/j.apacoust.2019.03.024

Cited by 11 publications

(3 citation statements)

References 8 publications

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“…In terms of the effect of the vehicle type on noise frequency, in the low-frequency range , the noise in this frequency band is mainly composed of engine noise and mechanical vibrations. Small vehicles typically have smaller engines and lighter body structures, resulting in lower noise levels for small vehicles, while larger vehicles generate more significant vibrations and engine noise [43]. In the 200-2000 Hz frequency range, the aerodynamic noise generated by vehicles relative to air movement during travel is most pronounced.…”

Section: Noise Characterization Of Different Types Of Vehiclesmentioning

confidence: 99%

Development and Testing of an Active Noise Control System for Urban Road Traffic Noise

Yang,

Yin,

et al. 2023

Applied Sciences

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As urbanization accelerates, the increasing number of vehicles and travel demands contribute to escalating road traffic noise pollution. Although passive noise control techniques such as noise barriers and green belts effectively mitigate noise, they occupy urban space, exacerbating the scarcity and high cost of already congested city areas. Emerging as a novel noise reduction strategy, active noise control (ANC) eliminates the need for physical isolation structures and addresses the noise within specific frequency ranges more effectively. This paper investigates the characteristics of urban road traffic noise and develops an ANC prototype. Utilizing the Least Mean Squares (LMS) algorithm, we conduct active noise control tests for various types of single- and dual-frequency noise within the prototype’s universal platform to validate its actual noise reduction capabilities. The study demonstrates that urban road traffic noise is mostly in the mid- to low-frequency range (below 2000 Hz). The developed ANC prototype significantly reduces single- or dual-frequency noise within this range, achieving a maximum noise reduction of nearly 30 dB(A). Future research should expand noise reduction tests across more frequency bands and assess the noise reduction effectiveness against real road traffic noise.

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Section: Noise Characterization Of Different Types Of Vehiclesmentioning

confidence: 99%

Development and Testing of an Active Noise Control System for Urban Road Traffic Noise

Yang,

Yin,

et al. 2023

Applied Sciences

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“…Therefore, the main advantage of the wave generator is that the solution could be cheap, and it could be used immediately and repeatedly in many places and situations. The proposed idea of an active wave generator is similar to solutions already used successfully in ANC (active noise control) systems to attenuate acoustic wave in headphones [57], vehicles [58] or accommodations [59,60]. It is also comparable to active or semi-active dampers applied to structures [1][2][3][4].…”

Section: Plos Onementioning

confidence: 99%

Wave generator as an alternative for classic and innovative wave transmission path vibration mitigation techniques

Herbut

2021

PLoS ONE

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In this paper the author proposes an approach in the form of an active wave generator for ground surface vibration reduction. The idea is compared to classic and innovative vibration mitigation techniques. The solution is mainly addressed to prevent people and structures against the destructive effects of anthropogenic vibrations. The efficiency of the presented idea is verified in the paper for two types of excitation–harmonic and impact loads, for points located on the ground surface and below it. The vibration reduction effect for structures is presented in the paper in the case of a three-story building. The advantages and disadvantages of the presented solutions are summarized. Moreover, this paper presents a wide and up-to-date literature review on the vibration control of the ground surface. Classical well-known technologies in the form of ground obstacles are compared with innovative ideas such as metamaterials.

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“…Nowadays, acoustic noises become one of the most common and yet troublesome problems that humanity is dealing with. Because of the increasing application of industrial equipment, such as engines, gears, and compressors, people suffer from acoustic noises alongside mechanical vibration practically everywhere (Kuo, Morgan, 1999;Nunez, Miranda et al, 2019). Based on the temporal feature of the acoustic noises, they can be categorized into two general groups, i.e.…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Sabzevari

2021

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M-estimators are widely used in active noise control (ANC) systems in order to update the adaptive FIR filter taps. ANC systems reduce the noise level by generating anti-noise signals. Up to now, the evaluation of M-estimators capabilities has shown that there exists a need for further improvements in this area. In this paper, a new improved M-estimator is proposed. The sensitivity of the proposed algorithm to the variations of its constant parameter is checked in feedforward control. The effectiveness of the algorithm in both types is proved by comparing it with previous studies. Simulation results show the steady performance and fast initial convergence of the proposed algorithm.

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Active noise control in acoustic shutters

Cited by 11 publications

References 8 publications

Development and Testing of an Active Noise Control System for Urban Road Traffic Noise

Development and Testing of an Active Noise Control System for Urban Road Traffic Noise

Wave generator as an alternative for classic and innovative wave transmission path vibration mitigation techniques

Archives of Acoustics

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