Browsing by Author "Salavedra Molí, Josep"
Now showing items 1-20 of 37
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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 ... -
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 ... -
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 ... -
Examen final de reavaluació, curs 2018-2019: enunciat i solucions genèriques
(Universitat Politècnica de Catalunya, 2019-07-10)
Exam
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Examen final del quadrimestre de primavera, curs 2011-2012: enunciat
(Universitat Politècnica de Catalunya, 2012-06-15)
Exam
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Examen final del quadrimestre de primavera, curs 2012-2013: enunciat
(Universitat Politècnica de Catalunya, 2013-06-21)
Exam
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Examen final del quadrimestre de primavera, curs 2018-2019: enunciat i solucions genèriques
(Universitat Politècnica de Catalunya, 2019-06-17)
Exam
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Examen final del quadrimestre de tardor, curs 2011-2012: enunciat
(Universitat Politècnica de Catalunya, 2012-01-24)
Exam
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Examen final del quadrimestre de tardor, curs 2013-2014: enunciat
(Universitat Politècnica de Catalunya, 2014-01-10)
Exam
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Examen final del quadrimestre de tardor, curs 2014-2015: enunciat
(Universitat Politècnica de Catalunya, 2015-01-13)
Exam
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Examen final del quadrimestre de tardor, curs 2017-2018: enunciat
(Universitat Politècnica de Catalunya, 2018-01-18)
Exam
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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 ...
