Results 241 to 250 of about 1,760,515 (295)

Lateralization and Detection of a Tonal Signal in Noise

The Journal of the Acoustical Society of America, 1969
The ability to lateralize a tonal signal against a white-noise background was investigated by presenting that signal at different intensities to the two ears. The signal (500 cps, 250 msec) was gated on every trial during the single observation interval. The more intense signal was equally likely to be presented to the left ear as to the right, and the
openaire   +2 more sources

NVH Refinement of Structure-Borne Tonal Noise in Electric Vehicle

SAE technical paper series
Globally all OEMs are moving towards electric vehicle to reduce emission and fuel cost. Customers expect highest level of refinement and sophistication in electric vehicle.
Nataraja Moorthy S, M. Rao, Prasath Raghavendran, Ebinezer Selvam   +3 more
semanticscholar   +1 more source

Acoustical barrier for tonal noises

Applied Acoustics, 2005
In this paper, a novel acoustical barrier based on the principle of the Helmholtz resonator is proposed for the mitigation of tonal noises and its in situ performance has been assessed in comparison with a reflecting barrier and an absorbent barrier.
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Psychoacoustically based tonality model for the evaluation of noise with tonal components

Journal of the Acoustical Society of America, 2015
For many years in various product assessments, tonality measurement procedures have been applied to identify and quantify prominent tonal components. The perception and evaluation of sound events containing such components has become increasingly important, e.g., in the field of vehicle acoustics for the assessment of tonality due to alternative drives,
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Human responses to the tonalness of aircraft noise

Noise Control Engineering Journal, 2010
A study was conducted to examine the influence of changes in tonalness on annoyance ratings of aircraft noise. Stimuli used in this study were simulated using a program in which aircraft noise was decomposed into noise and tonal components. From these base components, additional aircraft sounds were created by varying the amplitude of the tonal ...
Shashikant More, Patricia Davies
openaire   +1 more source

Numerical investigation of marine diesel engine turbocharger compressor tonal noise

Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2020
The compressor tonal noise of a low-speed marine diesel engine turbocharger is investigated with numerical method. Nine operating conditions on four different rotating speed lines are analyzed; the conditions include near-choke conditions, near-surge ...
Chen Liu, Yipeng Cao, Yang Liu, Wenping Zhang, P. Ming   +4 more
semanticscholar   +1 more source

Youla Parameterized Adaptive Feedback Attenuation Against Tonal and Band-Limited Random Noise in Ductworks

IEEE transactions on industrial electronics (1982. Print), 2022
Unknown multiple tonal noise and band-limited random noise can be both generated in ductwork systems. This article has constructed a LQG controller with an augmented Youla (Q) parameterized adaptive regulation approach to minimize the residual error at ...
Fanfan Qian, Feng Li, Zhizheng Wu, Tengfei Yue, Tingyue Xu   +4 more
semanticscholar   +1 more source

A secondary modulation mechanism for aerofoil tonal self-noise generation

Journal of Fluid Mechanics, 2022
Acoustic emission of a NACA 0012 aerofoil is investigated over a range of free-stream velocities. Acoustic spectra show a dominant tone and two sets of weaker side tones characterised by different frequency intervals.
Yannian Yang, S. Pröbsting, Pengyu Li, Yu Liu, Ye Li   +4 more
semanticscholar   +1 more source

Effects of blade surface roughness on compressor performance and tonal noise emission in a marine diesel engine turbocharger

, 2020
A numerical study was conducted to investigate the effects of blade surface roughness on compressor performance and tonal noise emission. The equivalent sand-grain roughness model was used to account for blade surface roughness, and a hybrid method that ...
Chen Liu, Yipeng Cao, Sihui Ding, Wenping Zhang, Yuhang Cai, Aqiang Lin   +5 more
semanticscholar   +1 more source

Tonal noise sensitivity in hard drives

The Journal of the Acoustical Society of America, 2013
High levels of noise have been found to cause offline events and data loss in information technology equipment in multiple data centers. Studies by this author and others showed these events were a result interaction between rotational storage media or hard drives (HDD) and air-borne noise.
Matthew L. Nickerson, Kent Green
openaire   +1 more source