Results 21 to 30 of about 433,637 (312)

Noise Reduction by Barriers [PDF]

The Journal of the Acoustical Society of America, 1973
A literature review is prepared to summarize the present state of knowledge concerning the field performance of barriers, with particular reference to screen-type barriers on finite impedance ground, to barriers of finite thickness, to right-angle wedges, to multiple barriers, and to effects of wind.
openaire   +1 more source

A Two-Microphone Noise Reduction Method in Highly Non-stationary Multiple-Noise-Source Environments [PDF]

, 2008
In this paper, we propose a two-microphone noise reduction method to deal with non-stationary interfering noises in multiple-noise-source environments in which the traditional two-microphone algorithms cannot function well.
SUZUKI, Yoiti, AKAGI, Masato, LI, Junfeng   +2 more
core   +1 more source

Multi-channel noise reduction in noisy environments [PDF]

, 2006
Multi-channel noise reduction has been widely researched to reduce acoustic noise signals and to improve the performance of many speech applications in noisy environments.
Li, Junfeng, Yôiti Suzuki, Junfeng Li, Masato Akagi, Akagi, Masato, Suzuki, Yoiti   +5 more
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Introduction to traffic noise abatement [PDF]

, 2014
Presents Evidence-Based Guidance on Noise Abatement Methods Solutions for reducing the noise impact of road and rail traffic can be found in the use of natural elements in combination with artificial elements in urban and rural environments.
Kihlman, Tor, Tor Kihlman, Wolfgang Kropp, Forss\ue9n, Jens, Kropp, Wolfgang, Kihlman, Tor,, Kropp, Wolfgang,, Forssén, Jens,, Jens Forssén   +8 more
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Perceptual effects of noise mitigation [PDF]

, 2014
Noise mitigation reduces the audibility of a noise source at the location of the receiver, making the source less annoying and less likely to interfere with activities, such as sleep, rest, and speech. Many mitigation methods change temporal and spectral
Nilsson, Mats E.,, Jeon, Jin Yong, Rådsten Ekman, Maria,, Botteldooren, Dick, Vincent, Bruno, Maillard, Julien, De Coensel, Bert, Joo, Young Hong   +7 more
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Research on Noise Generation Mechanism and Noise Reduction Ball Valve Measures of Ball Valve

IEEE Access, 2020
Ball valve is the core control component for flow in HVAC (Heating, Ventilation and Air Conditioning) system. And valve's flow noise is one of the key parameters to evaluate its performance.
Jin Zhang, Qifan Yang, Ruiqi Lv, Baolei Liu, Ying Li   +4 more
doaj   +1 more source

Noise Reduction [PDF]

, 2010
Among the many factors contributing to image quality degradation, noise is one of the most recurrent and difficult elements to deal with. Smart filters capable to remove noise without affecting the tiny details of a digital image are of primary importance to produce pleasant pictures.
A. Bosco, R. Rizzo
openaire   +2 more sources

An Effective Noise Estimator for Use in Noise Reduction [PDF]

Journal of information and communication convergence engineering, 2011
Conventional noise reduction filtering schemes realize limited improvements of the peak signal-to-noise ratio (PSNR) in the low-level noisy images. The flatness degree and the edge information are effectively used to estimate the noise volume. We propose a noise estimator for reducing noise in the AWGN (additive white gaussian noise) corrupted images ...
Hagyong Han, Homin Kwon, Sungmok Lee, Gidong Lee, Bongsoon Kang   +4 more
openaire   +1 more source

Experimental assessment of low noise landing gear component design [PDF]

, 2009
Landing gear related airframe noise is one of the dominant aircraft noise components atapproach, so continued research efforts to reduce landing gear noise are essential.
Chow, Leung Choi, Molin, Nicolas, Dereure, Olivier, Malcolm Smith, Olivier Dereure, Werner Dobrzynski, Boillot, Antoine, Leung Choi Chow, Antoine Boillot, Molin, Nicholas, Dobrzynski, Werner, Smith, Malcolm G., Smith, Malcolm, Nicolas Molin   +13 more
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Directional active noise control for drone noise reduction [PDF]

JASA 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, Yile (Angela) Zhang, Thushara D. Abhayapala, Prasanga N. Samarasinghe   +3 more
doaj   +1 more source