Results 11 to 20 of about 984,214 (255)

Angle-Dependent Absorption of Sound on Porous Materials

open access: yesAcoustics, 2020
Sound-absorbing materials are usually measured in a reverberation chamber (diffuse field condition) or in an impedance tube (normal sound incidence). In this paper, we show how angle-dependent absorption coefficients could be measured in a factory-type ...
Jose Cucharero   +2 more
doaj   +2 more sources

Computational Accuracy and Efficiency of Room Acoustics Simulation Using a Frequency Domain FEM with Air Absorption: 2D Study

open access: yesApplied Sciences, 2023
Recently, to simulate sound propagation inside architectural spaces at high frequencies, the application of computationally expensive wave-based numerical methods to room acoustics simulation is increasing gradually.
Takeshi Okuzono
doaj   +1 more source

An Archaeoacoustics Analysis of Cistercian Architecture: The Case of the Beaulieu Abbey

open access: yesAcoustics, 2021
The Cistercian order is of acoustic interest because previous research has hypothesized that Cistercian architectural structures were designed for longer reverberation times in order to reinforce Gregorian chants.
Sebastian Duran   +2 more
doaj   +1 more source

Experimental Validation of the Model of Reverberation Time Prediction in a Room

open access: yesBuildings, 2022
It is well known that the uncertainty of input data has a great influence on the accuracy of room acoustics simulations. The aforementioned accuracy is significantly influenced by the selection of the acoustic properties of room-delimiting materials ...
Artur Nowoświat, Marcelina Olechowska
doaj   +1 more source

Photoacoustic Imaging in Biomedicine and Life Sciences

open access: yesLife, 2022
Photo-acoustic imaging, also known as opto-acoustic imaging, has become a widely popular modality for biomedical applications. This hybrid technique possesses the advantages of high optical contrast and high ultrasonic resolution.
Alexey Neprokin   +4 more
doaj   +1 more source

An archaeoacoustic study on shape: the case study of the Iffland Theatre’s history (1802–1817)

open access: yesActa Acustica, 2023
Previous studies have discussed six pre-Sabine quantifiable guidelines employed in room acoustic design: voice directivity, audience rake, “echo theory”, stage acoustics, reverberation, and length, width, and height ratios.
Postma Barteld N.J., Katz Brian F.G.
doaj   +1 more source

Low-Frequency Broadband Acoustic Metasurface Absorbing Panels

open access: yesFrontiers in Mechanical Engineering, 2020
A broadband sound absorption attained by a deep-subwavelength structure is of great interest to the noise control community especially for extremely low frequencies (20–100 Hz) in room acoustics.
Jun Ji   +4 more
doaj   +1 more source

Acoustic coherent perfect absorption based on a PT symmetric coupled Mie resonator system

open access: yesAPL Materials, 2023
Parity-time (PT) symmetric coupled resonator systems have exhibited intriguing and unexpected properties in optics and electronics. Here, we extend it to acoustics and report a coupled Mie resonators (MRs) system respecting PT symmetry.
Fangfang Ju   +4 more
doaj   +1 more source

A Rough Estimation of Acoustics of the Cuboidal Room with Impedance Walls

open access: yesArchives of Acoustics, 2018
The cuboidal room acoustics field is modelled with the Fourier method. A combination of uniform, impedance boundary conditions imposed on walls is assumed, and they are expressed by absorption coefficient values.
Anna KOCAN-KRAWCZYK, Adam BRAŃSKI
doaj   +1 more source

Characterisation of small room acoustics for audio production [PDF]

open access: yes, 2009
Nowadays there is an explosion of home music production activities such as recording, mixing and mastering, which usually takes place in small spaces, which are not ideal for such tasks.
Atmoko, H.   +2 more
core   +5 more sources

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