Results 21 to 30 of about 23,194 (297)

Reverberation Suppression Method for Active Sonar Systems Using Non-Negative Matrix Factorization With Pre-Trained Frequency Basis Matrix

open access: yesIEEE Access, 2021
In active sonar systems, detection always suffers from reverberation interference from multiple scatterers in oceanic environments; therefore, numerous studies have been conducted on reverberation suppression.
Geunhwan Kim, Seokjin Lee
doaj   +1 more source

A Space-Time Adaptive Processing Method Based on Sparse Reconstruction of Reverberation Interference

open access: yesXibei Gongye Daxue Xuebao, 2020
Aiming at the problem of how to obtain reverberation samples and estimate their covariance matrix in the space-time adaptive processing(STAP) of sonar system, a new space-time adaptive processing method is proposed based on sparse reconstruction of ...

doaj   +1 more source

Recall of Reverberant Speech in Quiet and Four-Talker Babble Noise

open access: yesBrain Sciences, 2021
Using behavioral evaluation of free recall performance, we investigated whether reverberation and/or noise affected memory performance in normal-hearing adults. Thirty-four participants performed a free-recall task in which they were instructed to repeat
Miseung Koo   +6 more
doaj   +1 more source

Simulation of sonar reverberation signal considering the ocean multipath and Doppler effect

open access: yesFrontiers in Marine Science, 2023
In order to achieve accurate modeling and simulation of sonar reverberation signals, four types of multi-path underwater reverberation models are established considering Doppler effect under the condition of separating the sound source and hydrophone ...
Sen Zhang, Jian Wu, Jian Wu, Tianqi Yin
doaj   +1 more source

An overview of methods for generating, augmenting and evaluating room impulse response using artificial neural networks

open access: yesMokslas: Lietuvos Ateitis, 2021
Methods based on artificial neural networks (ANN) are widely used in various audio signal processing tasks. This provides opportunities to optimize processes and save resources required for calculations.
Mantas Tamulionis
doaj   +1 more source

Interaural Coherence Estimation for Speech Processing in Reverberant Environment

open access: yesApplied Sciences, 2020
Interaural coherence is used to quantify the effects of reverberation on speech, and previous studies applied the conventional method using all previous time data in the form of an infinite impulse response filter to estimate interaural coherence.
Seong-Hu Kim, Yong-Hwa Park
doaj   +1 more source

Effects of reverberation on speech intelligibility in noise for hearing-impaired listeners

open access: yesRoyal Society Open Science, 2022
Reverberation can have a strong detrimental effect on speech intelligibility in noise. Two main monaural effects were studied here: the temporal smearing of the target speech, which makes the speech less understandable, and the temporal smearing of the ...
Raphael Cueille   +2 more
doaj   +1 more source

"Good-but-Imperfect" electromagnetic reverberation in a VIRC [PDF]

open access: yes, 2011
Novel theoretical probability density functions (PDF) of electromagnetic fields inside reverberation chambers operating in a “good-but-imperfect‿ regime have been recently reported. The present work reports on the application and assessment of these PDFs
Canavero, F.   +12 more
core   +1 more source

Radiated Immunity Testing of a Device with an External Wire: Repeatibility of Reverberation Chamber Results and Correlation with Anechoic Chamber Results [PDF]

open access: yes, 2003
We present the experimental radiated immunity results of an electronic device with an external wire obtained in reverberation and anechoic chambers. Repeatability and reproducibility of reverberation chamber measurements are investigated by repeating the
Berat, V.   +6 more
core   +1 more source

Field Statistics in a One-Dimensional Reverberation Chamber Model [PDF]

open access: yes, 2008
This work focuses on building a fairly simple yet physically appropriate 1D model for a Reverberation Chamber which claims to be able to analytically predict the statistical behavior of such a chamber, without forsaking to the benefits of deterministic ...
Flavio Canavero   +4 more
core   +1 more source

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