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Multi-agent acoustic noise field characterization using optimal control
Journal of the Acoustical Society of America, 2016Investigations of acoustic-driven control schemes have stayed away from traditional Optimal Control methods because of the computational load and lack of direct solution methods. The method presented here overcomes these challenges and learns a spatially varying noise field by applying the Pontryagin Maximum Principle (PMP) to solve for optimal ...
Caitlin Bogdan +2 more
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Acoustic antennas characterization for pass-by-noise tests
2016Automotive pass-by noise is a complex test that requires the fulfilment of several different standards with regard to the physical track layout, measurement systems, data acquisition, triggering, processing and analysis. This paper describes the system developed by CIRA's vibro-acoustic Lab to provide a novel noise test solution that allows efficient ...
Diodati, Gianluca +3 more
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Designing and Characterizing Acoustic Metamaterials for Noise and Vibration Reduction
Acoustic metamaterials (AMMs), a class of artificially engineered materials, possess unique properties for manipulating sound and vibration that are not found in nature. This paper presents the design, numerical simulation, and experimental characterization of a locally resonant acoustic metamaterial for noise and vibration reduction.Anand Thipperudra +2 more
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Characterization of laptop computer noise and vibration using nearfield acoustic holography
The Journal of the Acoustical Society of America, 2018Noise from a laptop computer can be a source of annoyance, especially when the computer is used in a quiet environment for a long period of time. Apart from the fan noise, an equally troublesome noise, often characterized as the “buzz,” is produced by the vibration of the internal electronics components that transmits through the circuit board and ...
Seonghun Im +3 more
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Characterization of the smart-phone radiated noise using nearfield acoustic holography
Journal of the Acoustical Society of America, 2015Smart phones have dramatically evolved on the functional and aesthetic fronts in recent years. However, as smart phones get slimmer, problems arise where the noise radiated from the smart phone, albeit small in SPL, interferes with the conversation and degrades the call quality.
Donghyun Kim, Taeyoung Park, Won-Suk Ohm
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Source characterization of full-scale jet noise using acoustic intensity
Noise Control Engineering Journal, 2015Vector acoustic intensity provides both the direction and magnitude of energy flow at the probe location and is, hence, more informative than acoustic pressure measurements. However, this important quantity has seen little application previously in aeroacoustics.
Trevor A. Stout +4 more
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High Frequency Acoustic Channel Characterization for Propagation and Ambient Noise
2008Abstract : Predicting underwater detection capabilities as well as vulnerabilities depends strongly on the characteristics of the ocean acoustic propagation channel. Operational advantages can be obtained by exploiting the ambient noise field to characterize the channel. The long term goal of this research is to determine methods that take advantage of
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ACOUSTIC CHARACTERIZATION OF THE NOISE GENERATED BY TURBOCHARGERS
Proceedings of the 25th International Congress of Mechanical Engineering, 2019Vítor Mourão Hanriot +4 more
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Underwater Acoustic Noise Characterization In Sunda Straits Waters
2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC), 2022null Rahadian +4 more
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ACOUSTIC NOISE ANALYSIS, MEASUREMENT, AND CHARACTERIZATION IN ELECTRIC MOTOR DRIVES
Doctor of Philosophy (PhD)openaire +2 more sources