Results 11 to 20 of about 2,035,413 (277)

Entropy and Information Theory in Acoustics [PDF]

open access: yesEntropy, 2022
Acoustics is one of the most studied fields in the 21st century, encompassing underwater acoustics, architectural acoustics, engineering acoustics, physical acoustics, environmental acoustics, psychological acoustics, signal processing in acoustics, and ...
Yuxing Li
doaj   +2 more sources

Ultrathin Acoustic Metasurface-Based Schroeder Diffuser [PDF]

open access: yesPhysical Review X, 2017
“Schroeder diffuser” is a classical design, proposed over 40 years ago, for artificially creating optimal and predictable sound diffuse reflection. It has been widely adopted in architectural acoustics, and it has also shown substantial potential in ...
Yifan Zhu   +4 more
doaj   +2 more sources

Quasi-periodic Geometry for Architectural Acoustics

open access: yesEnquiry: The ARCC Journal of Architectural Research, 2018
The discovery of quasi-periodic atomic order in the crystalline state has uncovered an exciting new class of symmetries that has never been explored before.
Rima Ajlouni
doaj   +2 more sources

Tunable Helmholtz Resonators Using Multiple Necks [PDF]

open access: yesMicromachines, 2023
One of the uses of Helmholtz resonators is as sound absorbers for room acoustic applications, especially for the low frequency range. Their efficiency is centered around their resonance frequency which mainly depends on elements of their geometry such as
Nikolaos M. Papadakis   +1 more
doaj   +2 more sources

Panels of eco-friendly materials for architectural acoustics [PDF]

open access: yes, 2020
[EN] The objective of this work is to study the acoustic and mechanical properties of environmentally friendly materials manufactured through the process of resin infusion made from different types of fibres: some are biodegradable obtained from ...
Crespo, J.E   +5 more
core   +2 more sources

A low-frequency multiple-band sound insulator without blocking ventilation along a pipe [PDF]

open access: yesScientific Reports, 2022
It is challenging to insulate sound transmission in low frequency-bands without blocking the air flow in a pipe. In this work, a small and light membrane-based cubic sound insulator is created to block acoustic waves in multiple low frequency-bands from ...
Zi-jian Zhou   +7 more
doaj   +2 more sources

Architectural acoustics in America to 1930 [PDF]

open access: bronzeThe Journal of the Acoustical Society of America, 1976
The beginning of architectural acoustics as an engineering science began with Joseph Henry when he was requested by Congress to design a new lecture hall for the Smithsonian Institution in Washington. Henry's preliminary investigations led him to the discovery of what is now known as the “precedence effect,” setting limits on the permissible time lags ...
R. S. Shankland
openalex   +4 more sources

“Faith Not Works”: Chance Encounters and the Origins of Britain’s First Consultancy in Architectural Acoustics [PDF]

open access: yesJournal of the Society of Architectural Historians (JSAH)
Britain’s first independent architectural acoustic consultancy came into being at the close of World War I. Given the demonstrated disinterest in and lack of credence afforded to acoustics in architectural education and the complications encountered in ...
Fiona Smyth
core   +3 more sources

Virtual reality for architectural acoustics [PDF]

open access: yesJournal of Building Performance Simulation, 2014
Over the last decades, powerful prediction models have been developed in architectural acoustics, which are used for the calculation of sound propagation in indoor and/or outdoor scenarios. Sound insulation is predicted rather precisely by using direct and flanking transmission models of sound and vibration propagation.
Vorländer, Michael   +3 more
openaire   +3 more sources

Model Techniques in Architectural Acoustics [PDF]

open access: bronzeThe Journal of the Acoustical Society of America, 1969
Sound sources, microphones, detection, and display are described for the modeling methods for both the steady-state and transient types of testing. The methods have been refined for excellent precision for determining diffracted sound levels around complicated building structures, and for studying echograms within proposed auditorium designs so as to ...
Paul S. Veneklasen
openalex   +3 more sources

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