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In this paper we propose a nonlinear scalar predictor based on a combination of Multi Layer Perceptron, Radial Basis Functions and Elman networks. This system is applied to speech coding in an ADPCM backward scheme. The combination of this…

Sound · Computer Science 2022-04-06 Marcos Faundez-Zanuy

In this paper we propose a Non-Linear Predictive Vector quantizer (PVQ) for speech coding, based on Multi-Layer Perceptrons. With this scheme we have improved the results of our previous ADPCM coder with nonlinear prediction, and we have…

Machine Learning · Computer Science 2022-03-01 Marcos Faundez-Zanuy

In this paper we propose a Non-Linear Predictive Vector quantizer (PVQ) for speech coding, based on Multi-Layer Perceptrons. We also propose a method to evaluate if a quantizer is well designed, and if it exploits the correlation between…

Machine Learning · Computer Science 2022-03-08 Marcos Faundez-Zanuy

We compare a wide band sub-band speech coder using ADPCM schemes with linear prediction against the same scheme with nonlinear prediction based on multi-layer perceptrons. Exhaustive results are presented in each band, and the full signal.…

Sound · Computer Science 2022-03-25 Marcos Faundez-Zanuy

Recently several papers have been published on nonlinear prediction applied to speech coding. At ICASSP98 we presented a system based on an ADPCM scheme with a nonlinear predictor based on a neural net. The most critical parameter was the…

Sound · Computer Science 2022-03-07 Marcos Faundez-Zanuy

In the last years there has been a growing interest for nonlinear speech models. Several works have been published revealing the better performance of nonlinear techniques, but little attention has been dedicated to the implementation of…

Sound · Computer Science 2022-03-23 Marcos Faundez-Zanuy , Francesc Vallverdu , Enric Monte

Many speech coders are based on linear prediction coding (LPC), nevertheless with LPC is not possible to model the nonlinearities present in the speech signal. Because of this there is a growing interest for nonlinear techniques. In this…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-04 Marcos Faundez-Zanuy , Oscar Oliva-Suarez

Many approaches are developed for the forecasting of the Earth rotation pa-rameters. In this work, we consider long-term vector prediction scheme realized on the artificial neural network. Learning set is formed on basis of the Taken'…

Geophysics · Physics 2009-12-05 D. Milkov , L. Karimova , Z. Malkin

In this paper, we propose a neural-based coding scheme in which an artificial neural network is exploited to automatically compress and decompress speech signals by a trainable approach. Having a two-stage training phase, the system can be…

Sound · Computer Science 2016-01-25 Mahmood Yousefi-Azar , Farbod Razzazi

We propose a new encoder-decoder approach to learn distributed sentence representations that are applicable to multiple purposes. The model is learned by using a convolutional neural network as an encoder to map an input sentence into a…

Computation and Language · Computer Science 2017-07-28 Zhe Gan , Yunchen Pu , Ricardo Henao , Chunyuan Li , Xiaodong He , Lawrence Carin

In this paper we compare several ADPCM schemes with nonlinear prediction based on neural nets with the classical ADPCM schemes based on several linear prediction schemes. Main studied variations of the ADPCM scheme with adaptive…

Machine Learning · Computer Science 2022-03-08 Oscar Oliva , Marcos Faundez-Zanuy

In this work we study the inverse quantum scattering via deep learning regression, which is implemented via a Multilayer Perceptron. A step-by-step method is provided in order to obtain the potential parameters. A circular boundary-wall…

Computational Physics · Physics 2023-07-20 A. C. Maioli

This paper focuses on a newly developed transparent nADPCMB MLT speech coding algorithm. Our coder first decomposes the narrowband speech signal in subbands, a non linear ADPCM scheme is then performed in each subband. The signal subband…

Sound · Computer Science 2022-03-25 Guido D'Alessandro , Marcos Faundez Zanuy , Francesco Piazza

In some real world situations, linear models are not sufficient to represent accurately complex relations between input variables and output variables of a studied system. Multilayer Perceptrons are one of the most successful non-linear…

Neural and Evolutionary Computing · Computer Science 2008-02-05 Fabrice Rossi , Brieuc Conan-Guez

This paper is focused on nonlinear prediction coding, which consists on the prediction of a speech sample based on a nonlinear combination of previous samples. It is known that in the generation of the glottal pulse, the wave equation does…

Sound · Computer Science 2022-04-01 Marcos Faundez-Zanuy , Enric Monte , Francesc Vallverdú

In this paper, we propose an improved LPCNet vocoder using a linear prediction (LP)-structured mixture density network (MDN). The recently proposed LPCNet vocoder has successfully achieved high-quality and lightweight speech synthesis…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-03 Min-Jae Hwang , Eunwoo Song , Ryuichi Yamamoto , Frank Soong , Hong-Goo Kang

In the last years there has been a growing interest for nonlinear speech models. Several works have been published revealing the better performance of nonlinear techniques, but little attention has been dedicated to the implementation of…

Sound · Computer Science 2022-04-04 Marcos Faundez-Zanuy

Background: Building visual encoding models to accurately predict visual responses is a central challenge for current vision-based brain-machine interface techniques. To achieve high prediction accuracy on neural signals, visual encoding…

Computer Vision and Pattern Recognition · Computer Science 2019-02-26 Chi Zhang , Kai Qiao , Linyuan Wang , Li Tong , Guoen Hu , Ruyuan Zhang , Bin Yan

We propose a linear prediction (LP)-based waveform generation method via WaveNet vocoding framework. A WaveNet-based neural vocoder has significantly improved the quality of parametric text-to-speech (TTS) systems. However, it is…

Audio and Speech Processing · Electrical Eng. & Systems 2020-03-05 Min-Jae Hwang , Frank Soong , Eunwoo Song , Xi Wang , Hyeonjoo Kang , Hong-Goo Kang

This work concerns estimation of multidimensional nonlinear regression models using multilayer perceptron (MLP). The main problem with such model is that we have to know the covariance matrix of the noise to get optimal estimator. however…

Statistics Theory · Mathematics 2008-02-22 Joseph Rynkiewicz
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