Results 1 to 10 of about 6,502 (162)
Effects of Tonal Noise on Workers' Annoyance and Performance. [PDF]
Noise Health, 2021 Objective: Numerous references indicate that the subjectively assessed tonal noise annoyance is higher than that of broadband noise. There are no criteria for the impact of tonal noise in assessing the occupational environment for both indoor areas and workplaces. Materials and Methods:
Radosz J.
europepmc +3 more sources
A revisit of the tonal noise of small rotors. [PDF]
Proc Math Phys Eng Sci, 2020 In this study, asymptotic analysis of the frequency-domain formulation to compute the tonal noise of the small rotors in the now ubiquitously multi-rotor powered drones is conducted. Simple scaling laws are proposed to evaluate the impacts of the influential parameters such as blade number, flow speed, rotation speed, unsteady motion, thrust and ...
Zhong S, Zhou P, Fattah R, Zhang X.
europepmc +6 more sources
Acoustics, 2020 An experimental and analytical study of the tonal trailing-edge noise of a symmetric NACA-0012 aerofoil and of a cambered SD7003 aerofoil has been achieved. It provides a complete experimental database for both aerofoils and improves the understanding of
Vladimir Golubev +2 more
exaly +3 more sources
Inlet Gap Effect on Tonal Noise Generated from a Voluteless Centrifugal Fan
International Journal of Turbomachinery, Propulsion and Power, 2022 In this study, three voluteless centrifugal fans are compared for their aeroacoustic performances. The tonal noise is predicted by coupling the IDDES with Formulation 1A of Farassat. The sources of the tonal noise at the blade passing frequency (BPF) are
Huadong Yao +2 more
exaly +3 more sources
Experimental Determination of the Masking Threshold for Tonal Powertrain Noise in Electric Vehicles
Acoustics, 2023 Tonal powertrain noise can have a strong negative impact on vehicle sound quality. Therefore, an assessment of the perceptibility of tonal noise with respect to masking noise is essential for the vehicle development process.
Ercan Altınsoy, Víctor Abbink
exaly +3 more sources
Applied Sciences (Switzerland)Reducing the tonal noise from airfoil instabilities has attracted significant interest from the aeronautical community in the past few years. The aim of this paper is to investigate the effect of structured porous trailing edges on the tonal noise ...
Yong Wang, Kun Zhao
exaly +3 more sources
Masking noise reduces the anti-predator-like response to an acoustic stimulus: Application of Signal Detection Theory to fish behaviour. [PDF]
PLoS ONEIn studies of animal cognition, the influence of background masking noise on responses to any particular stimulus are often overlooked. In fish, there is little understanding of their response to targeted acoustic stimuli in the presence of high ...
Helen A L Currie +3 more
doaj +2 more sources
The effect of sensorineural hearing loss on suprathreshold perception of tonal components in noise [PDF]
JASA Express Letters, 2022 The present study investigates how sensorineural hearing loss affects the perception of suprathreshold tonal components in noise. Masked threshold, tonality, and loudness of the tonal content are measured for one, two, or four simultaneously presented ...
Jan Hots +2 more
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Lateralization of tonal signals in noise [PDF]
Bulletin of the Psychonomic Society, 1980 When listeners attempt to localize a tone in noise, the “signal” for lateralization is the change in interaural phase between tone plus noise and the interaural phase of the noise alone. Data are presented showing how lateralization performance varies as a function of the interaural correlation of the noise, signal-to-noise ratio, and tone frequency ...
Thomas F. Elliott, W. A. Wilbanks
openaire +1 more source
Aerodynamic and Aeroacoustic Analysis of a Harmonically Morphing Airfoil Using Dynamic Meshing
Acoustics, 2021 This work explores the aerodynamic and aeroacoustic responses of an airfoil fitted with a harmonically morphing Trailing Edge Flap (TEF). An unsteady parametrization method adapted for harmonic morphing is introduced, and then coupled with dynamic ...
Chawki Abdessemed +2 more
doaj +1 more source