Results 1 to 10 of about 14,802 (299)

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

Total Harmonic Distortion of a Piezoelectric MEMS Loudspeaker in an IEC 60318-4 Coupler Estimation Using Static Measurements and a Nonlinear State Space Model

open access: yesMicromachines, 2021
We propose a method to evaluate the Total Harmonic Distortion generated by a cantilever-based PZT loudspeaker inside an IEC 60318-4 coupler. The model is validated using experimental data of a commercial loudspeaker.
Romain Liechti   +8 more
doaj   +1 more source

The effect of housing volume of a converting loudspeaker on the output electric power of a loudspeaker-based acoustic energy harvester

open access: yesJournal of Physics: Theories and Applications, 2020
Acoustic energy harvester is a device that converts sound or acoustic energy into electrical energy. Generally, the main components of this instrument are an acoustic transducer and an acoustic resonator.
Ikhsan Setiawan
doaj   +1 more source

The construction and testing of an acoustic energy harvester consisting of a Helmholtz resonator and a loudspeaker

open access: yesJournal of Physics: Theories and Applications, 2020
Sound energy is all around but not properly utilized despite being a source of electricity. This research was conducted to construct and test an acoustic energy harvester consisting of a Helmholtz resonator and a loudspeaker.
Ikhsan Setiawan, Mulaiyinatus Sifa
doaj   +1 more source

Selecting Program Material by Audio Features for Low-Frequency Perceptual Evaluation of Loudspeakers

open access: yesApplied Sciences, 2021
The program material is of great importance for the results of the listening tests on loudspeakers, while the process of how to select the program material remains ambiguous.
Pei Yu   +4 more
doaj   +1 more source

Influence of Loudspeaker Configurations and Orientations on Sound Localization [PDF]

open access: yesArchives of Acoustics, 2022
As the virtual reality (VR) market is growing at a fast pace, numerous users and producers are emerging with the hope to navigate VR towards mainstream adoption.
Shu-Nung Yao
doaj   +1 more source

Optimization of Shunted Loudspeaker for Sound Absorption by Fully Exhaustive and Backtracking Algorithm

open access: yesApplied Sciences, 2021
The shunted loudspeaker with a negative impedance converter is a physical system with multiple influencing parameters. In this paper, a fully exhaustive backtracking algorithm was used to optimize these parameters, such as moving mass, total stiffness ...
Zihao Li, Xin Li, Bilong Liu
doaj   +1 more source

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

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

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

Home - About - Disclaimer - Privacy