Results 11 to 20 of about 555,673 (291)

Noise Reduction Algorithm Based on Template Wavelet Coefficients

, 2000
In the paper, a new algorithm based on the application of template wavelet coefficients is proposed to solve the problems concerning noise reduction in the vicinity of edges in signals and images and suppressing parasitic oscillations, which arise when threshold wavelet algorithms are used.
Oleksandr O. Bezvesilniy, V. V. Vynogradov, K. Schuenemann   +2 more
openalex   +2 more sources

110 Noise reduction using acoustic transparent wall : Influence of the pressurized condition to acoustic reflection coefficient

The Proceedings of the Symposium on Environmental Engineering, 2009
Tomonori MATSUDA, Masaharu Nishimura, Atsushi Nagata   +2 more
openalex   +3 more sources

Coupling Coefficient Improvement and Electromagnetic Induced Noise Reduction using Short-Circuited Winding for Loosely Coupled Inductor

IEEJ Journal of Industry Applications, 2016
Jun Imaoka, Wilmar Martínez, Masayoshi Yamamoto   +2 more
openalex   +3 more sources

The Potential of Sawdust and Coconut Fiber as Sound Reduction Materials

Journal of Applied Engineering and Technological Science, 2023
In this study, biodegradable materials that could be utilized to reduce noise were examined. Sound absorption test was conducted with an impedance tube. Sawdust, coconut fiber, and expansive clay were used to create test samples.
Joseph Nyumutsu, Anthony Agyei-Agyemang, Prince Yaw Andoh, Peter Oppong Tawiah, Benjamin Atribawuni Asaaga   +4 more
doaj   +1 more source

Noise Reduction Based on a CEEMD-WPT Crack Acoustic Emission Dataset

Applied Sciences, 2023
In order to solve the noise reduction problem of acoustic emission signals with cracks, a method combining Complementary Ensemble Empirical Mode Decomposition (CEEMD) and wavelet packet (WPT) is proposed and named CEEMD-WPT. Firstly, the single Empirical
Yongfeng Zhao, Yunrui Ma, Junli Du, Chaohua Wang, Dawei Xia, Weifeng Xin, Zhenyu Zhan, Runfeng Zhang, Jiangyi Chen   +8 more
doaj   +1 more source

Design of Noise-Reducing Two-Stage Cage Control Valve and Its Fluid Characteristics and Cavitation Study

Journal of Chemistry, 2022
For all kinds of media noise, noise reduction valve cage cannot meet the equal percentage flow characteristics, and for manufacturing and processing and other technical problems, research and design of new noise reduction two-stage cage control valve are
Ruiming Yu, Xi Lu
doaj   +1 more source

Artificial neural network-based determination of denoised optical properties in double integrating spheres measurement

Journal of Innovative Optical Health Sciences, 2023
Accurate determination of the optical properties of biological tissues enables quantitative understanding of light propagation in these tissues for optical diagnosis and treatment applications.
Yusaku Takai, Takahiro Nishimura, Yu Shimojo, Kunio Awazu   +3 more
doaj   +1 more source

Banana-Glass Fiber Composite for Acoustic Insulation and Prediction of Its Properties by Fuzzy Logic System

Journal of Natural Fibers, 2023
The objective of the current study is to develop a model employing a fuzzy logic expert system (FLES) for predicting the noise reduction coefficient (NRC) of a banana-glass fiber composite.
Moni Sankar Mondal, Syed Zubair Hussain
doaj   +1 more source

1106 Noise reduction using acoustic transparent wall(Theoretical analysis for reflection coefficient of acoustic transparent wall)

The Proceedings of Conference of Chugoku-Shikoku Branch, 2011
Tomonori MATSUDA, Masaharu Nishimura, Tomonobu GOTO   +2 more
openalex   +3 more sources

Investigation of the Sound-absorbing Performances of Pure Coffee Grounds

BioResources, 2023
Various natural sound-absorbing materials such as rice by-products, coir fiber, date palm fiber, peanut husks, hardwood cross-sections, and forest by-products have been introduced to replace petroleum-based sound-absorbing materials in previous studies ...
Chun-Won Kang, Kazuharu Hashitsume, Eun-Suk Jang   +2 more
doaj   +2 more sources