reverberant environments
Effectiveness of dereverberation, feature transformation, discriminative training methods, and system combination approach for various reverberant environments
... the REVERB challenge [1] data. The task is a medium- vocabulary ASR in reverberant environments, whose utterances are taken from the Wall Street Journal (WSJ ) database (WSJCAMO [39]). This database ...
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Speech intelligibility improvement in noisy reverberant environments based on speech enhancement and inverse filtering
... To determine the statistical significance, the confi- dence intervals were calculated with a significance level of 0.05. Figure 7 shows the mean scores of the algo- rithms under the different test conditions and the ...
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Acoustic Signal Processing Algorithms for Reverberant Environments
... This thesis investigates the design and the analysis of acoustic signal processing algorithms in reverberant rooms. Reverberation poses a major challenge to acous- tic signal processing problems. It degrades ...
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Front end technologies for robust ASR in reverberant environments—spectral enhancement based dereverberation and auditory modulation filterbank features
... As it can be seen in Fig. 7, AMFB features outper- form the MFCC-LDA-MLLT features by approx. 1 % in average. Even though MFCCs with splicing and LDA- MLLT extract temporal information (with L = R = 4) and already ...
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Performance of GCC and AMDF Based Time Delay Estimation in Practical Reverberant Environments
... In single-path propagation situations, the GCC and AMDF algorithms have been extensively investigated and their statistical performance is well understood [8, 17]. How- ever, multipath propagation and reverberation e ff ...
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A Method for Source-Microphone Range Estimation in Reverberant Environments Using Arrays of Unknown Geometry
... A series of recordings were made to test the Range-Finder under real conditions. The room used was the o ffi ce, which was chosen for being a highly reverberant environment that would best highlight the superior ...
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Particle Filter Design Using Importance Sampling for Acoustic Source Localisation and Tracking in Reverberant Environments
... simulated reverberant samples and real audio recordings demonstrate that the new algorithm is more suitable for practical applications due to its reinitialisation capabilities, despite showing a slightly lower ...
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3D Electromagnetic Diffusion Models for Reverberant Environments
... Abstract Diffusion equation based modeling has been proposed for mapping the reverberant component of the electromagnetic field in enclosures at high frequencies. Preliminary evaluation of the electromagnetic ...
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Evaluation Framework for Distant-talking Speech Recognition under Reverberant Environments: newest Part of the CENSREC Series -
... Recently, speech recognition performance has been drastically improved by statistical methods and huge speech databases. Now perfor- mance improvement under such realistic environments as noisy conditions is being ...
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A method for source microphone range estimation in reverberant environments, using an array of microphones of unknown relative position
... Indeed, the question of how to es- timate the range between a sound source and a microphone, in the presence of reverberation and with the relative positions of the microphones un- known[r] ...
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Sub sampling based 2D localization of an impulsive acoustic source in reverberant environments
... and reverberant-free outdoor ...ant environments [14]. The performance of GCC method under real reverberant conditions has been analyzed in [15], and several improvements have been ...
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Strategies for distant speech recognitionin reverberant environments
... Reverberation and noise are known to severely affect the automatic speech recognition (ASR) performance of speech recorded by distant microphones. Therefore, we must deal with reverberation if we are to realize ...
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Deep neural network-based bottleneck feature and denoising autoencoder-based dereverberation for distant-talking speaker identification
... Table 15 compares the results of distant-talking speaker identification using conventional and the proposed meth- ods. The results show that both BF-DNN and DAE per- formed better than the conventional methods in all ...
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SPEAKER RECOGNITION IN REVERBERANT CONDITIONS: A REVIEW
... in reverberant environments, as reverberation leads to clear physical effects on the perceived ...under reverberant conditions is given in this ...
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Reverberant speech recognition exploiting clarity index estimation
... ASR techniques robust to reverberation can be divided into two main groups [9–11]: front-end-based and back- end-based. The former approach suppresses the rever- beration in the feature domain; therefore, the processing ...
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Distant-talking speaker identification by generalized spectral subtraction-based dereverberation and its efficient computation
... Previously, a dereverberation method based on generalized spectral subtraction (GSS) using multi-channel least mean-squares (MCLMS) has been proposed. The results of speech recognition experiments showed that this method ...
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Speech recognition in reverberant and noisy environments employing multiple feature extractors and i vector speaker adaptation
... The REVERB challenge provides a common framework for the evaluation of feature extraction techniques in the presence of both reverberation and additive background noise. State-of-the-art speech recognition systems ...
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On the Meaning of Enclosure Shielding Effectiveness
... As electromagnetic fields are vector fields, it should not be surprising that the SE measured may depend on both the orientation of the illuminating field and that of the receiving antenna. It is usually assumed that the ...
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Bootstrap averaging for model based source separation in reverberant conditions
... More recently, there has been a growing interest in tech- niques employing non-negative matrix factorization (NMF) and deep neural networks (DNN) to the problem of source separation. The idea with NMF for multichannel ...
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The Calculation Method and the Test for Radiated Sound Power of Impulsive Noise in a Reverberant Tank
... a reverberant acoustic field is proposed in this paper, and the computing results of the time-frequency domain characteristic are verified in the tank at ASTL (Acoustic Science and Technology ...
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