Results 11 to 20 of about 4,768,178 (308)

Minimization of acoustic power in free space using multiple distributed sound sources (On the generation condition of the zero control power phenomena)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Low-frequency noise is difficult to suppress by passive control using a sound absorbing material. Active noise control is expected to be an effective method against low-frequency noise. Minimizing the total acoustic power emitted by a sound source causes
Yuta OGASAWARA   +2 more
doaj   +1 more source

Low Cost Omnidirectional Sound Source Utilizing a Common Directional Loudspeaker for Impulse Response Measurements

open access: yesApplied Sciences, 2018
Alternative low-cost sources (e.g., balloons, gun fires) are used for impulse response measurements when a dodecahedron speaker is not available. This study sets to explore the applicability of a method utilizing a common directional loudspeaker as a ...
Nikolaos M. Papadakis   +1 more
doaj   +1 more source

On Static Pressure Fluctuation between Sirocco Fan Blades in a Car Air-Conditioning System

open access: yesJournal of Fluid Science and Technology, 2008
In this study, special attention is directed to static pressure fluctuation in a sirocco fan for a car air-conditioning system, because it is expected that there is a close connection between the fluid noise and the pressure fluctuation.
Yasuhiko SAKAI   +7 more
doaj   +1 more source

Three-Dimensional Sound Field Reconstruction and Sound Power Estimation by Stereo Vision and Beamforming Technology

open access: yesApplied Sciences, 2020
The size of the sound field reconstruction area has an important influence on the beamforming sound source localization method and determines the speed of reconstruction.
Yetian Cai   +3 more
doaj   +1 more source

The metaphorical potential of onomatopoeia in German media discourse [PDF]

open access: yesАктуальные проблемы филологии и педагогической лингвистики
This paper is devoted to the study of the metaphorical potential of vocabulary with the semantics of sound in modern German, namely, the specifics of creating implicit meanings in the syntactic constructions of texts of mass media discourse with ...
Nataliya N. Evtugova
doaj   +1 more source

A New Method of Identifying the Aerodynamic Dipole Sound Source in the Near Wall Flow

open access: yesMathematics, 2023
Consider that the sound dipole source in the flow field is composed of multiple micro-spherical oscillating sources. An aerodynamic sound source identification method is established by the relationship among the oscillating source, the radiated sound ...
Hao Zhang, Yigang Wang, Yupeng Wang
doaj   +1 more source

An Efficient Framework for Estimating the Direction of Multiple Sound Sources Using Higher-Order Generalized Singular Value Decomposition

open access: yesSensors, 2019
This paper presents an efficient framework for estimating the direction-of-arrival (DOA) of wideband sound sources. The proposed framework provides an efficient way to construct a wideband cross-correlation matrix from multiple narrowband cross ...
Bandhit Suksiri, Masahiro Fukumoto
doaj   +1 more source

Wearable Hearing Assist System to Provide Hearing-Dog Functionality

open access: yesRobotics, 2019
This study developed a wearable hearing-assist system that can identify the direction of a sound source while using short-term interaural time differences (ITDs) of sound pressure and convey the sound source direction to a hearing-impaired person via ...
Ryuichi Shimoyama
doaj   +1 more source

Efficient and robust approaches for three-dimensional sound source recognition and localization using humanoid robots sensor arrays

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Efficient and robust sound source recognition and localization is one of the basic techniques for humanoid robots in terms of reaction to environments.
Hao Chen, Chengju Liu, Qijun Chen
doaj   +1 more source

Realization of sound source locating system based on six-dimensional space array

open access: yesDianzi Jishu Yingyong, 2020
Sound source localization technology is the basis of speech recognition technology. For the problem that the sound source localization accuracy is not ideal for complex noise and reverberant indoor environment, a sound source localization system based on
Yu Qiuting, Xiong Junqiao
doaj   +1 more source

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