Results 21 to 30 of about 8,538 (252)

Classroom acoustics and hearing ability as determinants for perceived social climate and intentions to stay at work

Noise and Health, 2013
Background noise and room acoustics may impede social interactions by interfering with oral communication and other cognitive processes. Accordingly, recent research in school environments has showed that social relationships with peers and teachers are ...
Roger Persson, Jesper Kristiansen, Søren P Lund, Hitomi Shibuya, Per Møberg Nielsen   +4 more
doaj   +1 more source

The effect of room acoustics on the sleep quality of healthy sleepers

Noise and Health, 2016
Introduction: Noise is one of the factors that can seriously disturb sleep, and sound volume is an important factor in this context. One strategy involves avoiding exposure to sounds in the night, while entail the minimization of background noise in a ...
Ingo Fietze, Charlotte Barthe, Matthias Hölzl, Martin Glos, Sandra Zimmermann, Ralf Bauer-Diefenbach, Thomas Penzel   +6 more
doaj   +1 more source

Blind Estimation of Speech Transmission Index and Room Acoustic Parameters by Using Extended Model of Room Impulse Response Derived From Speech Signals

IEEE Access, 2023
The speech transmission index (STI) and room acoustic parameters (RAPs) are essential metrics for assessing speech quality and predicting listening difficulty in a sound field.
Lijun Wang, Suradej Duangpummet, Masashi Unoki   +2 more
doaj   +1 more source

Linear Frequency Modulated Reverberation Suppression Using Non-Negative Matrix Factorization Methods, Dechirping Transformation and Modulo Operation

IEEE Access, 2020
In this study, we propose a reverberation suppression algorithm for linear frequency-modulated (LFM) pulse sonar systems using a non-negative matrix factorization (NMF) method.
Geunhwan Kim, Kyunkyung Lee, Seokjin Lee
doaj   +1 more source

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

Dianzi 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, Wang Ting, Guo Yecai, Chen Xiaoyan   +3 more
doaj   +1 more source

Fast processing models effects of reflections on binaural unmasking

Acta Acustica, 2023
Sound reflections and late reverberation alter energetic and binaural cues of a target source, thereby affecting its detection in noise. Two experiments investigated detection of harmonic complex tones, centered around 500 Hz, in noise, in a virtual room
Bischof Norbert F., Aublin Pierre G., Seeber Bernhard U.   +2 more
doaj   +1 more source

Augmenting Environmental Interaction in Audio Feedback Systems

Applied 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, Graham Wakefield, Juhan Nam   +2 more
doaj   +1 more source

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

South 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

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

Remote 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, Shuhan Liao, Juncheng Gao, Haidong Zhu, Nengtong Zhao, An Luo   +5 more
doaj   +1 more source

Determination of the Reverberation Time Using the Measurement of Sound Decay Curves

Applied Sciences, 2023
In the measurements of reverberation time, measurement methods of different accuracy are used depending on the room. For ordinary rooms, the measurements are made using the interrupted noise method, which consists of determining the decay curve after ...
Artur Nowoświat
doaj   +1 more source