Listar Ingeniería eléctrica por autor "Zeledón Córdoba, Marisol"
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A performance evaluation of several artificial neural networks for mapping speech spectrum parameters
Yeom Song, Victor; Zeledón Córdoba, Marisol; Coto Jiménez, Marvin (2020)In this work, we compare different neural network architectures, for the task of mapping spectral coefficients of noisy speech signals with those corresponding to natural speech. In previous works on the subject, fully-connected ... -
Assessing the robustness of recurrent neural networks to enhance the spectrum of reverberated speech
Paniagua Peñaranda, Carolina; Zeledón Córdoba, Marisol; Coto Jiménez, Marvin (2020)Implementing voice recognition systems and voice analysis in real-life contexts present important challenges, especially when signal recording/registering conditions are adverse. One of the conditions that produce signal ... -
Reconstructing fundamental frequency from noisy speech using initialized autoencoders
Zeledón Córdoba, Marisol; Sánchez Solís, Joseline; Coto Jiménez, Marvin (2020-10)In this paper, we present a new approach for fundamental frequency (f0) detection in noisy speech, based on Long Short-term Memory Neural Networks (LSTM). f0 is one of the most important parameters of human speech. Its ...