Results 81 to 90 of about 304,526 (305)
Subjective Experience of Speech Depending on the Acoustic Treatment in an Ordinary Room. [PDF]
Int J Environ Res Public Health, 2021 Arvidsson E +3 more
europepmc +1 more source
Turbofan aft duct suppressor study [PDF]
Suppressions due to acoustic treatment in the annular exhaust duct of a model fan were theoretically predicted and compared with measured suppressions. The predictions are based on the modal analysis of sound propagation in a straight annular flow duct ...
Fiske, G. H. +4 more
core +1 more source
Advanced Materials, EarlyView.This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau +9 more
wiley +1 more source
Study on effect of absorbent on acoustic damping of duct
Nihon Kikai Gakkai ronbunshu, 2014 The acoustic material has been used inside ducts as a countermeasure of the self-sustained tone generated from heat exchangers and boilers. However the effects of the amount of acoustic material and its patching position in a lined duct on the acoustic ...
Kunihiko ISHIHARA +2 more
doaj +1 more source
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
A Study on the Redesign of Hospital Outpatient Halls Based on Acoustic Environment Requirements
BuildingsThe acoustic design of outpatient halls is often ignored, yet the acoustic environment significantly impacts patients’ physical and mental well-being as well as their visit experience.
Zhirui Zhu +4 more
doaj +1 more source
Frontiers in Psychology, 2015 The acoustic startle response (SR) has consistently been shown to be enhanced by fear-arousing cross-modal background stimuli in phobics. Intra-modal fear-potentiation of acoustic SR was rarely investigated and generated inconsistent results. The present
Andre eWannemueller +4 more
doaj +1 more source
Single stage, low noise advanced technology fan. Volume 3: Acoustic design [PDF]
The acoustic design for a half-scale fan vehicle, which would have application on an advanced transport aircraft, is described. The single stage advanced technology fan was designed to a pressure ratio of 1.8 at a tip speed of 503 m/sec (1,650 ft/sec ...
Kazin, S. B., Mishler, R. B.
core +1 more source
Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration
Advanced Materials, EarlyView.A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang +7 more
wiley +1 more source
Evaluation of the NASA Ames no. 1 7 by 10 foot wind tunnel as an acoustic test facility [PDF]
Measurements were made in the no. 1 7'x10' wind tunnel at NASA Ames Research Center, with the objectives of defining the acoustic characteristics and recommending minimum cost treatments so that the tunnel can be converted into an acoustic research ...
Scharton, T. D., Wilby, J. F.
core +1 more source