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Article
Acoustics
Pierangelo Libianchi et al.
Summary: Sound field control can be used to reduce noise emissions from outdoor live music events, and pressure matching is one method employed. The proposed method utilizes the conjugate gradient least square to compute a solution, which provides an easier way to find suitable regularization and control the radiation pattern to reduce side lobes. Through simulations and outdoor measurements, it is demonstrated that the method achieves 10 dB insertion loss over a broad frequency range.
Article
Engineering, Mechanical
Shuai Zhang et al.
Summary: A multi-channel delayed adaptive notch algorithm based on the FxLMS structure is proposed for active control of vehicle interior engine noise. The algorithm utilizes a reference signal model established using vehicle engine speed, and introduces a new time-delay method to simplify the filtering process and improve calculation efficiency. Simulation results confirm the accuracy of the algorithm. Real vehicle experiments demonstrate its effectiveness in reducing engine noise.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Review
Acoustics
Albert G. Prinn
Summary: Accurate predictions of the wave-dominated region of an acoustic field in a room can be generated using wave-based computational methods, such as the finite element method (FEM). This article reviews the use of FEM for room acoustics, including its history, implementation, and solutions. The current challenges and state-of-the-art techniques are also discussed.
Article
Chemistry, Multidisciplinary
Tao Jiang et al.
Summary: NVH (noise, vibration, and harshness) is a significant factor affecting vehicle comfort, and active noise control (ANC) provides an advantage in reducing low- and medium-frequency road noise. However, the classic FxLMS algorithm fails to adapt to different road noises in complex and changing noise environments. This paper proposes an adaptive step size algorithm (ASSFxLMS) that adjusts the step size based on the reference signal to ensure stability. A particle swarm optimization algorithm is also used to improve the algorithm's performance. Simulation and experimental results demonstrate the effectiveness of the proposed algorithm in reducing road noise in vehicles.
APPLIED SCIENCES-BASEL
(2023)
Article
Acoustics
Guo Long et al.
Summary: Active noise control systems require specific algorithms and optimal configurations for effective deployment. This study presents a subband active noise control system with optimal parameters for practical broadband noise control. The complex interplay between factors such as spectral leakage, delay, and weight stacking distortion makes optimal design challenging.
JOURNAL OF VIBRATION AND CONTROL
(2022)
Article
Acoustics
Menglei Sun et al.
Summary: This paper proposes a new feedforward and feedback hybrid active noise control (HANC) system for excavator interior noise. The system consists of three subsystems: a delayed feedforward narrowband subsystem, a robust feedback broadband subsystem, and a supporting error calculating (SEC) subsystem. The proposed system achieves decoupling of subsystems, provides accurate error and reference signals, and enhances system robustness. Extensive computer simulations and real-time experiments validate the superior performance of the proposed system compared to existing HANC systems.
Article
Chemistry, Multidisciplinary
Sangwoo Ha et al.
Summary: This paper proposes a horizontal active noise control (ANC) method that only uses two-dimensional wave field information, reducing the number of microphones and speakers compared to ANC systems using three-dimensional wave field information. The study presents simulation and experimental results of the ANC system using five microphones and loudspeakers with traditional ANC algorithms. The findings show an average noise reduction of 20 dB inside the microphone array, which is acceptable considering the significantly reduced number of microphones and speakers. This study contributes significantly to the global commercialization of ANC.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Jin Zhang et al.
Summary: This study investigates the performance of two widely-used virtual sensing methods for active noise control (ANC) under practical conditions, finding that the additional-filter method is sensitive to the properties of reference signals while the remote-microphone method is sensitive to changes in plant responses related to monitoring microphones. Use of this study can guide the choice of virtual sensing methods in different applications.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Review
Engineering, Electrical & Electronic
Lu Lu et al.
Summary: This paper is divided into two parts, reviewing the development of linear ANC techniques in the first part and discussing the advancements and applications of nonlinear ANC algorithms in the second part. The recent progress of NLANC algorithms, such as spline ANC algorithms and kernel adaptive filters, is highlighted.
Review
Engineering, Electrical & Electronic
Lu Lu et al.
Summary: This paper focuses on the development of ANC techniques over the past decade, including the research on linear ANC algorithms and nonlinear ANC techniques. It also summarizes novel methods and applications of ANC emerging in the past decade, and discusses future research challenges regarding the ANC technique.
Article
Chemistry, Multidisciplinary
Bhan Lam et al.
APPLIED SCIENCES-BASEL
(2020)
Article
Acoustics
Shuping Wang et al.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2018)
Article
Acoustics
Jiancheng Tao et al.
Article
Acoustics
Shuping Wang et al.
Review
Acoustics
Sajaad Boodoo et al.
ACTA ACUSTICA UNITED WITH ACUSTICA
(2015)
Article
Acoustics
Weisong Chen et al.
Article
Acoustics
Allahyar Montazeri et al.
Article
Operations Research & Management Science
ZG Diamantis et al.
COMPUTATIONAL OPTIMIZATION AND APPLICATIONS
(2002)
Letter
Acoustics
X Qiu et al.
JOURNAL OF SOUND AND VIBRATION
(2000)
