Results 1 to 10 of about 17,193 (294)

Reverberation suppression algorithm for LS beamforming based on Wiener post-filter

open access: yesDianzi Jishu Yingyong, 2018
Reverberation causes speech signal time and frequency to blur, and speech is difficult to understand when serious. In order to improve the speech quality, this paper presents a least squares beamforming reverberation suppression algorithm with Wiener ...
Zhang Xiuzai   +3 more
doaj   +1 more source

Cascaded-Filter-Based Reverberation Suppression Method of Short-Pulse Continuous Wave for Active Sonar

open access: yesRemote Sensing
Reverberation is the main background interference in active sonar and seriously interferes with the extraction of the target echo. Active sonar systems can use short-pulse continuous wave (CW) signals to reduce the reverberation intensity.
Yonglin Cui   +5 more
doaj   +1 more source

Augmenting Environmental Interaction in Audio Feedback Systems

open access: yesApplied Sciences, 2016
Audio feedback is defined as a positive feedback of acoustic signals where an audio input and output form a loop, and may be utilized artistically. This article presents new context-based controls over audio feedback, leading to the generation of desired
Seunghun Kim   +2 more
doaj   +1 more source

Knowledge and attitudes of teachers regarding the impact of classroom acoustics on speech perception and learning

open access: yesSouth African Journal of Communication Disorders, 2009
This study investigated the knowledge and attitude of primary school teachers regarding the impact of poor classroom acoustics on learners’ speech perception and learning in class.
Lebogang Ramma
doaj   +1 more source

Estimation of the Area of a Reverberant Plate Using Average Reverberation Properties

open access: yesPhysics Procedia, 2015
This paper aims to present an original method for the estimation of the area of thin plates of arbitrary geometrical shapes. This method relies on the acquisition and ensemble processing of reverberated elastic signals on few sensors. The acoustical Green's function in a reverberant solid medium is modeled by a nonstationary random process based on the
Achdjian, Hossep   +3 more
openaire   +3 more sources

A signal enhancement method based on the reverberation statistical information

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
This paper proposes a reverberation suppression algorithm utilizing fractional lower-order moments based on statistical properties. As fractional lower-order moments can only be applied on symmetric α-stable random variables, the energy redistribution ...
Ge Yu, Jiangjiang Sun, Xiukun Li
doaj   +1 more source

Acoustic Intervention in a Cultural Heritage: The Chapel of the Royal Palace in Caserta, Italy

open access: yesBuildings, 2015
The modern use of ancient heritage sites can be, to say the least, challenging from an acoustical perspective. In fact, modern needs may require acoustical interventions in contrast with the preservation issues of the cultural heritage.
Umberto Berardi   +2 more
doaj   +1 more source

Classroom Listening Conditions in Indian Primary Schools: A Survey of Four Schools

open access: yesNoise and Health, 2017
Introduction: Background noise affects the listening environment inside classrooms, especially for younger children. High background noise level adversely affects not only student speech perception but also teacher vocal hygiene.
Gayathri Sundaravadhanan   +2 more
doaj   +1 more source

Study of reverberation pattern and its cancellation method in shallow water [PDF]

open access: yesTheoretical and Applied Mechanics, 2007
In shallow water, the primary limitation of the performance of active sonar is the reverberation that originates from volume and boundaries scattering as well as multi-path propagation. There­fore, reverberation cancelation is an important research topic
Yang Shiuh-Kuang   +2 more
doaj   +1 more source

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