Results 1 to 10 of about 237,043 (257)

An experimental model to measure the ability of headphones with active noise control to reduce patient’s exposure to noise in an intensive care unit [PDF]

open access: yesIntensive Care Medicine Experimental, 2017
Background Defining the association between excessive noise in intensive care units, sleep disturbance and morbidity, including delirium, is confounded by the difficulty of implementing successful strategies to reduce patient’s exposure to noise.
Stuart Gallacher   +3 more
doaj   +2 more sources

Neuro-Fuzzy Network-Based Nonlinear Hybrid Active Noise Control Systems [PDF]

open access: yesEntropy
Active noise control (ANC) technology has extensive applications in suppressing sound pollution in the real-world environment. In this paper, a new adaptive neuro-fuzzy network (ANFN)-based controller is presented and integrated into hybrid active noise ...
Thi Trung Tin Nguyen   +3 more
doaj   +2 more sources

Multirate Audio-Integrated Feedback Active Noise Control Systems Using Decimated-Band Adaptive Filters for Reducing Narrowband Noises [PDF]

open access: yesSensors, 2020
Audio-integrated feedback active noise control (AFANC) systems deliver wideband audio signals and cancel low frequency narrowband noises simultaneously. The conventional AFANC system uses single-rate processing with fullband adaptive active noise control
Antonius Siswanto   +2 more
doaj   +2 more sources

Directional active noise control for drone noise reduction [PDF]

open access: yesJASA Express Letters
Drones have become essential tools for applications ranging from aerial surveillance to last-mile delivery, raising concerns about noise pollution in populated environments.
Hanwen Bi   +3 more
doaj   +3 more sources

A Review of Virtual Sensing Algorithms for Active Noise Control

open access: yesAlgorithms, 2008
Traditional local active noise control systems minimise the measured acoustic pressure to generate a zone of quiet at the physical error sensor location. The resulting zone of quiet is generally limited in size and this requires the physical error sensor
Danielle Moreau   +3 more
doaj   +3 more sources

Tunable active noise control circuit topology for multiple-feature applications [PDF]

open access: yesScientific Reports
A tunable active-noise-control (ANC) circuit topology for headsets used in different applications is presented in this article. In the current consumer headset market, ANC is a mature technology that is commonly applied to wireless headsets connected to ...
Tak Chun Kwong   +3 more
doaj   +2 more sources

Active Noise Control [PDF]

open access: yesAdvances in Acoustics and Vibration, 2008
This chapter introduces principles, algorithms, and applications of active noise control (ANC) systems. We emphasize the practical aspects of ANC systems in terms of adaptive algorithms for real-world applications. The basic algorithm for ANC is first developed and analyzed based on broadband feedforward control.
Sen M. Kuo, Dennis R. Morgan
  +6 more sources

Performance Analysis of Active Structural Acoustic Control Applied to a Washing Machine

open access: yesSensors, 2022
Great efforts are undertaken by scientists and manufacturers to reduce noise generated by devices present in the human environment. This task is particularly difficult in the case of low-frequency noise; however, active noise reduction methods can be a ...
Stanislaw Wrona
doaj   +1 more source

Performance Evaluation of Active Noise Control for a Real Device Casing

open access: yesApplied Sciences, 2020
Reduction of noise generated by devices is an important problem, both in industrial environments where high sound pressure levels may damage hearing, and in households where the sound pressure level is usually moderate, but may cause discomfort and ...
Krzysztof Mazur   +2 more
doaj   +1 more source

Active Noise Control for Aircraft Cabin Seats

open access: yesApplied Sciences, 2022
In turboprop aircraft, the low-frequency noise field created by the propellers is the major contributor to the interior vibro-acoustic field, which determines a passenger’s discomfort.
Ignazio Dimino   +4 more
doaj   +1 more source

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