OperaV1, Hal, Corpus, bibRecord, 000256

TOWARDS A NEW REFERENCE SYSTEM FOR SUBJECTIVE EVALUATION OF CODING TECHNIQUES

Identifieur interne : 000256 ( Hal/Corpus ); précédent : 000255; suivant : 000257

TOWARDS A NEW REFERENCE SYSTEM FOR SUBJECTIVE EVALUATION OF CODING TECHNIQUES

Auteurs : Thierry Etame ; Régine Le Bouquin Jeannes ; Catherine Quinquis ; Laetitia Gros ; Gérard Faucon

Source :

RBID : Hal:hal-00909597

Abstract

This paper aims to produce a reference system that can simulate and calibrate degradations of conversational codecs which are currently used on telecommunications networks, for subjective assessment tests of voice quality. At first, 20 wideband codecs are evaluated through subjective tests in order to produce the multidimensional perceptual space underlying the perception of current degradations. Then, a verbalization task helps to identify attribute for each dimension: clear/muffle, background noise, noise on speech and hiss. These dimensions are characterized with correlates such as spectral centroid, energy in the silent part in the high frequency sub-band, ratio of brightness between deterministic part and residual part of the signal and correlation coefficient. This 4-dimension perceptual space is stable for male and female talkers. A new reference system is proposed. The phase of validation leads to a perceptual space with five dimensions including the four previous ones.

Url:

https://hal.archives-ouvertes.fr/hal-00909597

Links to Exploration step

Hal:hal-00909597

Le document en format XML

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<front><div type="abstract" xml:lang="en">This paper aims to produce a reference system that can simulate and calibrate degradations of conversational codecs which are currently used on telecommunications networks, for subjective assessment tests of voice quality. At first, 20 wideband codecs are evaluated through subjective tests in order to produce the multidimensional perceptual space underlying the perception of current degradations. Then, a verbalization task helps to identify attribute for each dimension: clear/muffle, background noise, noise on speech and hiss. These dimensions are characterized with correlates such as spectral centroid, energy in the silent part in the high frequency sub-band, ratio of brightness between deterministic part and residual part of the signal and correlation coefficient. This 4-dimension perceptual space is stable for male and female talkers. A new reference system is proposed. The phase of validation leads to a perceptual space with five dimensions including the four previous ones.</div>
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<abstract xml:lang="en">This paper aims to produce a reference system that can simulate and calibrate degradations of conversational codecs which are currently used on telecommunications networks, for subjective assessment tests of voice quality. At first, 20 wideband codecs are evaluated through subjective tests in order to produce the multidimensional perceptual space underlying the perception of current degradations. Then, a verbalization task helps to identify attribute for each dimension: clear/muffle, background noise, noise on speech and hiss. These dimensions are characterized with correlates such as spectral centroid, energy in the silent part in the high frequency sub-band, ratio of brightness between deterministic part and residual part of the signal and correlation coefficient. This 4-dimension perceptual space is stable for male and female talkers. A new reference system is proposed. The phase of validation leads to a perceptual space with five dimensions including the four previous ones.</abstract>
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TOWARDS A NEW REFERENCE SYSTEM FOR SUBJECTIVE EVALUATION OF CODING TECHNIQUES

TOWARDS A NEW REFERENCE SYSTEM FOR SUBJECTIVE EVALUATION OF CODING TECHNIQUES

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