Results 11 to 20 of about 35,202 (339)

Evaluating the onset conditions of a thermoacoustic Stirling engine loaded with an audio loudspeaker

open access: yesFrontiers in Thermal Engineering, 2023
This paper aims to evaluate the onset conditions of a thermoacoustic Stirling engine loaded with a commercially available audio loudspeaker. The thermoacoustic engine converts supplied heat power into mechanical power in the form of sound, without any ...
Shu-Han Hsu, Chuan-Heng Lai
doaj   +1 more source

Drone Applications Fighting COVID-19 Pandemic—Towards Good Practices

open access: yesDrones, 2022
Of the recent epidemics, the impact of the COVID-19 pandemic has been particularly severe, not only putting our health at risk, but also negatively affecting our daily lives.
Ágoston Restás
doaj   +1 more source

Loudspeaker Analysis: A Radar Based Approach

open access: yesIEEE Sensors Journal, 2020
Recently, radar based micro-Doppler signature analysis has been successfully applied in various sectors including defence, biomedical, and automotive. This article presents the novel use of radar micro-Doppler for loudspeaker analysis.
A. Izzo   +3 more
semanticscholar   +1 more source

Intensity Based Spatial Soundfield Reproduction Using an Irregular Loudspeaker Array

open access: yesIEEE/ACM Transactions on Audio Speech and Language Processing, 2020
Sound intensity is an acoustic quantity closely linked with human perception of sound location, and it can be controlled to create a high level of realism to humans in soundfield reproduction systems.
Huanyu Zuo   +2 more
semanticscholar   +1 more source

Dynamic analysis using finite element method for a nonlinear spring-supported disk: Technique to reduce second-order distortion due to diaphragm shape

open access: yesMechanical Engineering Journal, 2017
This research aims to reduce the second-order distortion due to diaphragm vibration. The quadratic term of the restoring force of nonlinear springs varies in the pulling and compression directions.
Mitsuharu WATANABE   +4 more
doaj   +1 more source

One-Dimensional Haptic Rendering Using Audio Speaker with Displacement Determined by Inductance

open access: yesMachines, 2016
We report overall design considerations and preliminary results for a new haptic rendering device based on an audio loudspeaker. Our application models tissue properties during microsurgery.
Avin Khera   +7 more
doaj   +1 more source

Effect of Loudspeakers on the In Situ Electric Field in a Driver Body Model Exposed to an Electric Vehicle Wireless Power Transfer System

open access: yesEnergies, 2020
This study computationally evaluates the effect of loudspeakers on the in situ electric field in a driver body model exposed to the magnetic field from a wireless power transfer (WPT) system in an electric vehicle (EV), one with a body made of carbon ...
Junqing Lan, Akimasa Hirata
doaj   +1 more source

Optimized Driver Placement for Array-Driven Flat-Panel Loudspeakers

open access: yesArchives of Acoustics, 2017
The recently demonstrated ‘modal crossover network’ method for flat panel loudspeaker tuning employs an array of force drivers to selectively excite one or more panel bending modes from a spectrum of panel bending modes.
David A. ANDERSON   +2 more
doaj   +1 more source

Loudspeaker Abnormal Sound Classification Using Auditory Perception Weighted by Energy Entropy

open access: yesIEEE Access, 2023
In order to improve the classification accuracy of loudspeaker abnormal sounds, this paper proposes a method based on time-varying specific loudness weighted by energy entropy and principal component analysis.
Haitao Su   +4 more
doaj   +1 more source

Nanogenerator-based dual-functional and self-powered thin patch loudspeaker or microphone for flexible electronics

open access: yesNature Communications, 2017
Ferroelectret nanogenerators were recently introduced as a promising alternative technology for harvesting kinetic energy. Here we report the device’s intrinsic properties that allow for the bidirectional conversion of energy between electrical and ...
Wei Li   +7 more
semanticscholar   +1 more source

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