Browsing by Author "Salavedra Molí, Josep"
Now showing items 1-20 of 29
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APVQ encoder applied to wideband speech coding
(Institute of Electrical and Electronics Engineers (IEEE), 1996)
Conference report
Open AccessThe paper describes a coding scheme for broadband speech (sampling frequency 16 KHz). The authors present a wideband speech encoder called APVQ (adaptive predictive vector quantization). It combines subband coding, vector ... -
A speech enhancement system using higher order ar estimation in real environments
(1993)
Conference report
Open AccessWe study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim [2], where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our ... -
AVPC-Subband Coding System for Speech Encoding
(1987)
Conference report
Open AccessThe combination of Vector Quantization (VQ) and predictive techniques -named AVPC systems- has been shown as interesting systems for speech waveform coding at medium-high rates (ref. 1 to 3). In this work we present a such ... -
Bandwidth extension of narrowband speech
(Universidad Politécnica de Valencia, 2014)
Conference report
Open AccessRecently, 4G mobile phone systems have been designed to process wideband speech signals whose sampling frequency is 16 kHz. However, most part of mobile and classical phone network, and current 3G mobile phones, still ... -
Codificación APVQ de voz en banda ancha para velocidades entre 16 y 32 KBPS
(1996)
Conference report
Open AccessThis paper describes a coding scheme for broadband speech (sampling frequency 16KHz). We present a wideband speech encoder called APVQ (Adaptive Predictive Vector Quantization). It combines Subband Coding, Vector Quantization ... -
Codificación APVQ de voz en banda ancha usando asignación dinámica de bits
(Universidad de Valladolid, 1995)
Conference report
Open AccessThis paper describes a coding scheme for broadband speech. It can be seen as a vectorial extension of a conventional ADPCM encoder. In this scheme, signal vector is formed with one sample of the normalized prediction error ... -
Codificación APVQ-extendida de voz de banda ancha
(1994)
Conference report
Open AccessThis paper describes a coding scheme for broadband speech. It can be seen as a vectorial extension of an conventional ADPCM encoder. In this scheme, the vector signal is formed with one sample of the normalizaed prediction ... -
Comparison of different order cumulants in a speech enhancement system by adaptive Wiener filtering
(IEEE Press, 1993)
Conference report
Open AccessThe authors study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim and Oppenheim (1978), where the AR spectral estimation of the speech is carried out using a second-order analysis. ... -
Demisyllable-based HMM spotting for continuous speech recognition
(Institute of Electrical and Electronics Engineers (IEEE), 1991)
Conference report
Open AccessThe authors describe the acoustic processor of a Spanish continuous speech recognition system based on demisyllable units. The acoustic processor is based on a spotting algorithm which takes as input the unknown utterance, ... -
Distortion effects of several cumulant-based wiener filtering algorithms
(1999)
Conference report
Open AccessSome Single-Microphone Speech Enhancement algorithms based on the iterative Wiener filtering Method due to Lim-Oppenheim [2] are evaluated. In the original Lim-Oppenheim algorithm, AR spectral estimation of speech is carried ... -
Jornada de Docència 2017
(2017-06-27)
Audiovisual
Open Access9h45 h: Obertura de la jornada 10:00 -11:00 h: Conferència plenària “Estudiants participatius: realitat o ficció” Vanesa Daza (Univ. Pompeu Fabra). Parlarem de diferents experiències portades a terme a l’Escola Superior ... -
Out-of-vocabulary word modelling and rejection for keyword spotting
(International Speech Communication Association (ISCA), 1993)
Conference report
Restricted access - publisher's policyThis paper presents a combination of out-of-vocabulary (OOV) word modeling and rejection techniques in an attempt to accept utterances embedding a keyword and reject utterances with nonkeywords. The goal of this research ... -
Predicción lineal de la parte causal de la autocorrelación para la identificación del locutor en ambientes ruidosos
(Universidad de las Palmas de Gran Canaria, 1994)
Conference lecture
Open Access -
Predicción lineal de la parte causal de la autocorrelación para la identificación del locutor en ambientes ruidosos
(1994)
Conference report
Open AccessRecently, a new parametrization technique based on the AR modelling of the one-sided autocorrelation sequence (OSALPC) has shown to be attractive for speech recognition because of its simplicity and its high recognition ... -
Predictive neural networks applied to phoneme recognition
(1997)
Conference report
Open AccessIn this paper a phoneme recognition system based on predictive neural networks is proposed. Neural networks are used to predict observation vectors of speech frames. The obtained prediction error is used for phoneme ... -
Robust coefficients of a higher order AR modelling in a speech enhancement system using parameterized Wiener filtering
(Institute of Electrical and Electronics Engineers (IEEE), 1994)
Conference report
Open AccessWe study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim (1978), where the AR spectral estimation of the speech is carried out using a second-order analysis. But in ... -
Robust HOS-based techniques applied to speech recognition and enchancement
(1995)
Conference report
Open AccessWe study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim [2], where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our ... -
Robust hos-based techniques applied to speech recognition and enhancement
(1995)
Conference report
Open AccessWe study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim [2], where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our ... -
Sistema de mejora de voz usando estimación AR de orden superior en ambientes reales
(1993)
Conference report
Open AccessWe study some speech enhancement algorithms based on the iterative Wiener filtering method due to LimOppenheim, where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our ... -
Some fast higher order ar estimation techniques applied to parametric wiener filtering
(2004)
Conference report
Open AccessSome Speech Enhancement algorithms based on the iterative Wiener filtering Method due to L1m-Oppenheim [2] are presented. In the original Lim-Oppenheim algorithm, speech AR estimation is carried out using classic second-order ...
