Results 21 to 30 of about 4,876,481 (301)

Transmission loss in manatee habitats

open access: yesThe Journal of the Acoustical Society of America, 2006
The Florida manatee is regularly exposed to high volumes of vessel traffic and other human-related noise because of its coastal distribution. Quantifying specific aspects of the manatee’s acoustic environment will allow for a better understanding of how these animals respond to both natural and human-induced changes in their environment.
Miksis-Olds, Jennifer L.   +1 more
openaire   +4 more sources

Analytical and computational acoustic modelling of side outlet muffler and its extension in the modelling of tapered side outlet [PDF]

open access: yesArchives of Acoustics, 2022
Mufflers are popular in the suppression of noise levels coming from various machinery. The most common parameters for the evaluation of the performance of mufflers are transmission loss, noise level, and insertion loss. The transmission loss is evaluated
Sandeep Kumar Vishwakarma   +1 more
doaj   +1 more source

Topology Optimization of Low-Loss Z-Bend 2D Photonic Crystal Waveguide

open access: yesPhotonics, 2023
In this article, we design a low-loss, high-bandwidth Z-bend photonic silicon crystal waveguide bending in a triangular lattice through topology optimization.
Gang Liu   +6 more
doaj   +1 more source

mstudiva/SCTLD-ballast-transmission: Stony coral tissue loss disease ballast water transmission and treatment

open access: yes, 2022
First release associated with the submission of the manuscript "Transmission of stony coral tissue loss disease (SCTLD) in simulated ballast water confirms the potential for ship-born ...
Michael-Studivan
core   +1 more source

Transmission Loss of Plasterboard Walls [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1966
Although test data are available for many variations of the typical plasterboard wall, there are enough minor variations in construction or test technique that it is difficult to deduce accurately the effects of the various parameters. Accordingly, a systematic study has been made of a number of experimental and practical walls.
openaire   +1 more source

Design and Fabrication Challenges for Millimeter-Scale Three-Dimensional Phononic Crystals

open access: yesCrystals, 2017
While phononic crystals can be theoretically modeled with a variety of analytical and numerical methods, the practical realization and comprehensive characterization of complex designs is often challenging.
Frieder Lucklum, Michael J. Vellekoop
doaj   +1 more source

Predicting Acoustic Transmission Loss Uncertainty in Ocean Environments with Neural Networks

open access: yesJournal of Marine Science and Engineering, 2022
Computational predictions of acoustic transmission loss (TL) in ocean environments depend on the relevant environmental characteristics, such as the sound speed field, bathymetry, and seabed properties.
Brandon M. Lee   +2 more
doaj   +1 more source

The Experimental And Simulation Analysis Of The Transmission Loss Of The Muffler In The Rotary Compressor [PDF]

open access: yes, 2012
The discharge muffler of the rotary compressor is used to reduce the discharge noise produced by pressure pulsations. In order to obtain the transmission loss of discharge muffler, four microphone experimental devices used to measure the transmission ...
Xu, Jia, Zhang, Rongting, Gu, Huanhuan
core   +1 more source

Local model of plane acoustic waves propagation in multilayered infinite sandwich structures

open access: yesArchives of Mechanics, 2011
A local model for computing the coincidence frequencies and the transmission loss of multilayered infinite sandwich plates composed of isotropic layers is presented in the paper. The model is derived within the local theory of linear elastodynamics under
S. Karczmarzyk
doaj   +1 more source

First demonstration of a low loss 37-cell hollow core photonic bandgap fiber and its use for data transmission

open access: yes, 2013
A low loss (4.5dB/km) 37-cell core HC-PBGF is reported for the first time. Detailed modal analysis using time of flight and S2 techniques, and error-free 40Gbit/s single mode data transmission are ...
Petrovich, M.N.   +23 more
core   +1 more source

Home - About - Disclaimer - Privacy