Global active control of harmonic noise in a vibro-acoustic cavity using Modal FxLMS algorithm

Puri, Amrita; Modak, S.V.; Gupta, Kapil

doi:10.1016/j.apacoust.2019.02.008

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…where µ is the step size and X(n) = s(n) * x(n) is the secondary signal. In particular, for global active control of noise inside a cavity, the modal FxLMS algorithm is adopted [124,125]. The conventional FxLMS algorithm is formulated in the modal domain of the acoustic cavity to reduce the specific acoustic modes.…”

Section: Filtered-x Lms-based Algorithmsmentioning

confidence: 99%

A survey on active noise control in the past decade—Part I: Linear systems

et al. 2021

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Active noise control (ANC) is an effective way for reducing the noise level in electroacoustic or electromechanical systems. Since its first introduction in 1936, this approach has been greatly developed. This paper focuses on discussing the development of ANC techniques over the past decade. Linear ANC algorithms, including the celebrated filtered-x least-mean-square (FxLMS)based algorithms and distributed ANC algorithms, are investigated and evaluated. Nonlinear ANC (NLANC) techniques, such as functional link artificial neural network (FLANN)-based algorithms, are pursued in Part II. Furthermore, some novel methods and applications of ANC emerging in the past decade are summarized. Finally, future research challenges regarding the ANC technique are discussed.

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Section: Filtered-x Lms-based Algorithmsmentioning

confidence: 99%

A survey on active noise control in the past decade—Part I: Linear systems

et al. 2021

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“…Experimental results on indirect path noise control in enclosed spaces were reported by Warnaka et al 1 and Ross 2 . this area has been studied continuously, and research has expanded to global ANC in three-dimensional enclosed spaces [3][4][5][6][7] . However, because enclosed spaces have various sizes, shapes, and reflective properties of walls, this method involves different solutions for the different spaces in which ANC is applied.…”

Section: Submitted To: Scientific Reportsmentioning

confidence: 99%

Experimental Design Methodology for Global Active Noise Control in Enclosed Space

Jeong

Park

2021

Preprint

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The purpose of this paper is to propose an experimental design methodology for global active noise control in an enclosed space. We aim to control the noise caused by an internal noise source. Since each enclosed space has different acoustic characteristics, it is difficult to design different controllers suitable for each enclosed space. So, we decided to design a controller that could be used universally. The basic concept is the collocation of noise source and control speakers to generate a sound field opposite in phase to the noise source in a free field. For implementation of the proposed method, we propose a configuration method of control speakers and error microphones, and an active noise control algorithm. Also, to confirm the applicability of the proposed method, we design a controller in an anechoic chamber, which represents a free field condition, and perform active noise control in other enclosed spaces with the controller designed for the anechoic chamber. The experimental results show that the solution calculated in the free field condition can be used in other enclosed spaces without any modifications.

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“…Pury et al (Puri et al, 2018(Puri et al, , 2019a(Puri et al, , 2019b proposed a new algorithm named Modal FxLMS to globally attenuate the harmonic acoustic noise inside a vibroacoustic cavity. This approach introduces a new concept called the modal secondary path.…”

Section: Introductionmentioning

confidence: 99%

Active noise control for global broadband noise attenuation in a cylindrical cavity using Modal FxLMS algorithm

Iranpour

Loghmani

Danesh

2022

Journal of Vibration and Control

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Noise reduction is very important for cavities such as long ventilation ducts, and train and airplane cabins. This paper seeks to develop, design, and implement an active noise control system to globally reduce narrowband and broadband acoustic noises inside a cylindrical cavity using the Modal FxLMS algorithm along with canceling the feedback effect of the actuator on the reference microphone. In addition, the efficiency of the proposed algorithm is compared to the conventional FxLMS algorithm for broadband noises in terms of acoustic potential energy and energy consumption of the actuators. To this end, the natural frequencies and mode shapes are derived using experimental methods and finite element simulation, and the results are compared. The modal data are used to design and implement a modal filter. The filter output is fed to the Modal FxLMS algorithm as the error signal for updating controller coefficients. Due to the presence of a reference microphone for the proposed algorithm and the effect of the control loudspeaker, it is required to remove the feedback effect. An experimental setup is developed, and an FPGA board and LabVIEW software are adopted to implement and verify the effectiveness of the proposed algorithm. The results indicate that the controller could effectively attenuate the narrowband and broadband acoustic noises globally. Furthermore, although the conventional FxLMS algorithm can suppress the noise around acoustic modes, it produces a larger control signal than the Modal FxLMS algorithm and consumes more energy.

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Global active control of harmonic noise in a vibro-acoustic cavity using Modal FxLMS algorithm

Cited by 9 publications

References 18 publications

A survey on active noise control in the past decade—Part I: Linear systems

A survey on active noise control in the past decade—Part I: Linear systems

Experimental Design Methodology for Global Active Noise Control in Enclosed Space

Active noise control for global broadband noise attenuation in a cylindrical cavity using Modal FxLMS algorithm

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