Listar Artículos Científicos por autor
Mostrando publicaciones 1-11 de 11
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3D multiple sound source localization by proposed cuboids nested microphone array in combination with adaptive wavelet-based subband GEVD
Dehghan Firoozabadi, Ali; Irarrazaval, Pablo; Adasme, Pablo; Zabala-Blanco, David; Palacios Játiva, Pablo; Azurdia-Meza, Cesar A. (2020)Sound source localization is one of the applicable areas in speech signal processing. The main challenge appears when the aim is a simultaneous multiple sound source localization from overlapped speech signals with an ...
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A multi-channel speech enhancement method based on subband affine projection algorithm in combination with proposed circular nested microphone array
Dehghan Firoozabadi, Ali; Irarrazaval, Pablo; Adasme, Pablo; Durney, Hugo; Sanhueza, Miguel; Zabala-Blanco, David; Azurdia-Meza, Cesar A. (2021)In this paper, a novel multi-channel speech enhancement system is introduced based on a proposed circular nested microphone array (C-NMA) in combination with subband affine projection algorithm (SB-APA). The multi-channel ...
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Detection of epileptic seizures by analysis of electroencephalogram based on Wavelet transform
Urbina Fredes, Sebastián; Dehghan Firoozabadi, Ali; Adasme, Pablo; Zabala-Blanco, David; Palacios Játiva, Pablo; Azurdia-Meza, Cesar A. (2023)In recent years, some novel methods have been developed for the detection of diseases based on biomedical signals. In this article, a method for the automated detection of epilepsy seizures is presented by analyzing ...
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Estimating the number of speakers by novel zig-zag nested microphone array based on wavelet packet and adaptive GCC method
Dehghan Firoozabadi, Ali; Irarrázaval, Pablo; Adasme, Pablo; Zabala-Blanco, David; Palacios Játiva, Pablo; Durney, Hugo; Sanhueza Olave, Miguel (2022)In this paper, a new speaker counting algorithm is proposed by novel zig-zag nested array (ZZNA) combining with adaptive generalized cross-correlation (GCC) function (with phase transform (PHAT) and maximum likelihood (ML)) ...
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Evaluation of localization precision by proposed quasi-spherical nested microphone array in combination with multiresolution adaptive steered response power
Dehghan Firoozabadi, Ali; Irarrazaval, Pablo; Adasme, Pablo; Zabala-Blanco, David; Azurdia-Meza, Cesar A. (2020)Multiple sound source localization in noisy and reverberant conditions is one of the important challenges in the speech signal processing. The aim of this article is three-dimensional sound source localization in undesirable ...
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Finite field metrics applied to M-FSK modulation in VLC systems
Guajardo-Penroz, Cristobal; Soto, Ismael; San-Juan, Enrique; Adasme, Pablo; Azurdia-Meza, Cesar A.; Zabala-Blanco, David (2020)This paper provides an alternative to digital filter based frequency detection for multi-frequency shift keying modulation (M-FSK) using field programmable gate array (FPGA) architectures, by providing a hamming space ...
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Multi-speaker localization by central and lateral microphone arrays based on the combination of 2D-SRP and subband GEVD algorithms
Dehghan Firoozabadi, Ali; Irarrázaval, Pablo; Adasme, Pablo; Zabala-Blanco, David; Palacios Játiva, Pablo; Durney, Hugo; Sanhueza Olave, Miguel; Azurdia, Cesar (2022)In this paper, a novel speech source localization (SSL) algorithm by the use of the central and lateral microphone arrays is proposed with low complexity and high precision in undesirable acoustical environments. Firstly, ...
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Multiresolution speech enhancement based on proposed circular nested microphone array in combination with sub-band affine projection algorithm
Dehghan Firoozabadi, Ali; Irarrazaval, Pablo; Adasme, Pablo; Zabala-Blanco, David; Durney, Hugo; Sanhueza, Miguel; Palacios-Játiva, Pablo; Azurdia-Meza, Cesar A. (2020)Speech enhancement is one of the most important fields in audio and speech signal processing. The speech enhancement methods are divided into the single and multi-channel algorithms. The multi-channel methods increase the ...
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Simultaneous sound source localization by proposed cuboids nested microphone array based on subband generalized eigenvalue decomposition
Dehghan Firoozabadi, Ali; Irarrazaval, Pablo; Adasme, Pablo; Durney, Hugo; Sanhueza, Miguel; Zabala-Blanco, David; Azurdia-Meza, Cesar A. (2020)Multiple sound source localization is an important application in speech processing. In this paper, a cuboids nested microphone array (CuNMA) is proposed for sound acquisition. Also, the spatial aliasing is eliminated by ...
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Speaker counting based on a novel hive shaped nested microphone array by WPT and 2D adaptive SRP algorithms in near-field scenarios
Dehghan Firoozabadi, Ali; Adasme, Pablo; Zabala-Blanco, David; Palacios Játiva, Pablo; Azurdia-Meza, Cesar A. (2023)Speech processing algorithms, especially sound source localization (SSL), speech enhancement, and speaker tracking are considered to be the main fields in this application. Most speech processing algorithms require knowing ...
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Speaker counting by scattered microphone array based on DOA and eigenvalue estimations in adverse environments
Dehghan Firoozabadi, Ali; Adasme, Pablo; Zabala-Blanco, David; Palacios-Jativa, Pablo; Azurdia-Meza, Cesar A. (2023)In this paper, a smart subband system for speaker counting is proposed by scattered microphone array (SMA) and using direction of arrival (DOA) estimation with adaptive eigenvalue decomposition (AED). Firstly, the recorded ...