Proceedings ArticleDOI
Speech quality assessment of compounded digital telecommunication systems; perceptual dimensions
K.T. Petersen,S.D. Hansen,John Aasted Sørensen +2 more
- Vol. 2, pp 1375-1378
TLDR
The object of this paper is to describe the first stage of the construction of a proposed three-layer model for speech quality assessment and to define four main perceptual dimensions to be used in the second layer of the proposed model.Abstract:
Digital telecommunication networks may involve a multiple number of public switched telephone networks (PSTN), cellular and mobile systems and to some extent also satellite systems. Most of these networks contain non-linear speech coders and other speech algorithms which may degrade the overall end-to-end quality of speech. An important problem is how to assess the speech quality of such compounded systems. The object of this paper is to describe the first stage of the construction of a proposed three-layer model for speech quality assessment. A subjective test of the speech quality of 16 different compounded transmission paths (mixtures of PCM, GSM full and half rate, DECT, CELP, LD CELP, FS10-16) is carried out by 40 subjects using 21 different rating scales. The main result of this paper is the test results which lead to the definition of four main perceptual dimensions to be used in the second layer of the proposed model.read more
Citations
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Dissertation
Assessment and prediction of speech transmission quality with an auditory processing model
TL;DR: The prediction method introduced here may be used for monitoring speech transmission quality in realistic time-varying conditions and for the quality optimization of speech coding algorithms, e.g., for mobile telephones.
Dissertation
Évaluation subjective de la qualité : proposition d'un système de référence pour les codecs en bande élargie
TL;DR: In this paper, the authors modelise puis valide les signaux d'ancrage des trois premieres dimensions and propose deux modeles de signaux-dancrage for the quatrieme.
Proceedings ArticleDOI
Objective speech quality assessment of compounded digital telecommunication systems
TL;DR: The object of this paper is to describe the development of a proposed three-layer model for objective speech quality assessment based on a subjective test of the speech quality of 16 compounded transmission paths and involves 40 subjects using 21 different rating scales.
Dissertation
Diagnostic et évaluation automatique de la qualité vocale à partir d'indicateurs hybride
TL;DR: In this article, the authors propose a diagnostic and speech quality using hybrid indicators (DESQHI) model, which is based on the idea of using a hybrid indicator to represent the caracteristiques of the signal and parametriques.
Dissertation
Développement d'une méthode de diagnostic technique des dégradations de qualité vocale perçue des communications téléphoniques à partir d'une analyse du signal de parole
TL;DR: In this article, the authors propose an outil de diagnostic de qualite vocale (applicable aux services de telephonie), complementaire a de tels modeles objectifs, in order to orienter des informations specifiques sur la nature des defauts presents sur le signal audio and orienter vers des causes potentielles of ces defauts.
References
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Journal Article
A Perceptual Audio Quality Measure Based on a Psychoacoustic Sound Representation
TL;DR: In this article, a general method for predicting subjectivity quality of speech codecs is developed using the concept of an internal sound representation, which is used to calculate the internal representation of the input and output signals of a speech codec.
Proceedings ArticleDOI
Diagnostic acceptability measure for speech communication systems
TL;DR: The Diagnostic Acceptability Measure (DAM) resulted from an extensive program of research on the perceptual correlates of the acceptability of processed speech to yield estimates of intelligibility, pleasantness and overall acceptability.
Book ChapterDOI
The Dod 4.8 Kbps Standard (Proposed Federal Standard 1016)
TL;DR: A code excited linear predictive (CELP) coder, jointly developed by the DoD and ATT it’s even comparable to 32,000 bps continuously variable slope delta modulation (CVSD) and is robust in acoustic noise, channel errors, and tandem coding conditions.