Results 31 to 40 of about 25,812 (165)
Modulating Sound with Acoustic Metafiber Bundles [PDF]
Scientific Reports, 2017 AbstractAcoustic metamaterials and metasurfaces provide great flexibility for manipulating sound waves and promise unprecedented functionality, ranging from transformation acoustics, acoustic cloaking, acoustic imaging to acoustic rerouting. However, the design of artificial structures with both broad bandwidth and multifunctionality remains ...
Jian-ping Xia +2 more
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Methods for separating the noise produced by the wheels and track during a train pass-by
Railway Engineering ScienceRolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson +6 more
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Source-time dominant modeling of the Doppler shift for the auralization of moving sources
Acta AcusticaWhen developing an auralization for acoustic scenarios involving moving sources and receivers, one key feature is the ability to simulate the Doppler shift, i.e., the changing frequency content from the receiver’s perspective.
Ali Randall, Christian Andrew
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Concert Hall Sound Clarity: A Comparison of Auditory Judgments and Objective Measures
Archives of Acoustics, 2013 The purpose of the study was to compare auditory judgments of sound clarity of music examples recorded in a concert hall with predictions of clarity made from the impulse response signal recorded in the same hall.
Andrzej MIŚKIEWICZ +4 more
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The influence of reflections from the train body and the ground on the sound radiation from a railway rail [PDF]
Railway SciencesPurpose – The vibration of the rails is a significant source of railway rolling noise, often forming the dominant component of noise in the important frequency region between 400 and 2000 Hz.
David J. Thompson +5 more
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PERCEIVED ROUGHNESS OF TWO SIMULTANEOUS HARMONIC COMPLEX TONES
Archives of Acoustics, 2014 Two experiments were carried out to determine the dependence of perceived roughness on the frequency ratio of two simultaneous harmonic complex tones.
Andrzej MIŚKIEWICZ +2 more
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Binaural Auralization of Room Acoustics with a Highly Scalable Wave-Based Acoustics Simulation
Applied Sciences, 2023 This paper presents a proposal of an efficient binaural room-acoustics auralization method, an essential goal of room-acoustics modeling. The method uses a massively parallel wave-based room-acoustics solver based on a dispersion-optimized explicit time ...
Takumi Yoshida +2 more
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Graphene-infused terracotta acoustic sound amplifiers
Scientific ReportsAbstract This work introduces a novel approach for enhancing mobile audio performance by incorporating graphene-infused terracotta as an acoustic amplifier. Leveraging the high thermal conductivity and mechanical strength of graphene, this study demonstrates the design, fabrication, and acoustic characterization of terracotta amplifiers.
T. R. Rajalekshmi +3 more
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Crystals, 2020 In the past two decades, acoustic metamaterials have garnered much attention owing to their unique functional characteristics, which are difficult to find in naturally available materials. The acoustic metamaterials have demonstrated excellent acoustical
Sanjay Kumar, Heow Pueh Lee
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Roughness of two simultaneous harmonic complex tones in various pitch registers
Archives of Acoustics, 2014 The purpose of the study was to determine the dependence of perceived roughness on the frequency ratio of two simultaneous harmonic complex tones.
Joanna SZCZEPAŃSKA-ANTOSIK
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